Modern Deterrents

Watching today's young Japanese students push their desks to the side of the room and hide under them, as teachers pull shades over the windows to deflect flying glass, only reminds us this was a procedure that couldn't protect populations from nuclear attacks in the 1950s. Strategies designed to protect a retaliatory second strike weapon system after an initial surprise bombing in the 1960s are out-of-date as well.

     Nuclear-equipped enemies in the 21st century include minor nations and possible terrorist groups that have nothing to lose. Major players have cyber soldiers that don't move on their stomachs. They keep coming without food or sleep. Not only nuclear fallout can contaminate an environment, but climate change and asteroid collisions with Earth also threaten the world's food supply.

     We are seeing people taking survival into their own hands. One of the characters on "Orange is the New Black" represents those families who prepare their own caves with guns and a stockpile of food and water. Refugees already begin walking or taking to the sea in leaking boats and rafts to escape war-torn areas. Farmers are developing cross-breeding for livestock and hydroponic and aquaponic growing methods to produce food in new ways.

     Computer hacking and nanotechnology offer new defensive options for compromising the performance of all sorts of enemy systems. Enemies know how each others guidance systems work. Besides shooting nuclear ICBMs out of the sky and scattering radioactive particles over the Earth, redirecting ICBMs (and any enemy weapons) to strike whoever launched them has the potential to transform MAD (mutually assured destruction) into SAD (self assured destruction) and cause the most fearsome tyrant to try to scamper for a submarine.

     Programmers already send drones to destroy targets as small as individuals. There are "Hurt Locker" experts who disable bombs on land. Could drones disable nuclear missiles in space? In films, astronauts also keep asteroids from hitting Earth, and furry little forest creatures cause oncoming cyber soldiers to crash by tangling their legs in vines. Meanwhile, high-tech Star Wars airmen penetrate fortresses through air supply vents.

      In the past, shields have blocked arrows, gun powder reduced castle walls to rubble, tanks swept around the Maginot Line, and an armada of fishing boats rescued an army, while prayer and repentance saved Nineveh from destruction. Alliances change from century to century, but the darkness of night, fog, snow, and a blinding sunrise still have the power to deter an effective military response.

     The wise expect an unending race between offense and defense and use their smarts to triumph.

Better Cows for Africa

A recent trip to Australia sparked Bill Gates' interest in improving milk production in Africa. He writes about his discoveries, problems, and what might be done at team@gatesnotes.com.

It is staggering to find cows on US dairy farms produce nearly 30 liters of milk every day compared to the 1.69 liters produced by an average Ethiopian cow.  While sending Wisconsin cows to Ethiopia would expose them to tropical heat and disease, using artificial insemination to crossbreed an Ethiopian cow with bull semen from a genetic line that produces lots of milk could increase milk output. In the heat of Africa, the required task of keeping frozen semen frozen is not easy, however.

To read more about worldwide milk consumption and production, see the earlier post, "Dairy Cows on the Moove." The magazine,  Hoard's Dairyman (hoards.com), published by Hoard's dairy farm in Wisconsin, USA, has been an authority on the dairy industry since 1885. National and international subscribers can choose to receive print or digital copies.

  Qatar is showing how, out of necessity and under the right conditions, Holstein dairy cows can be moved successfully from Wisconsin to another country to provide milk and breed. After being accused of financing Muslim extremists, Iran, and the Muslim Brotherhood; and being told to stop broadcasts from its al-Jazeera news network; Saudi Arabia, the United Arab Emerates, Bahrain, and Egypt imposed sanctions on June 5, 2017 that amounted to a blockade of Qatar's imports. Using riches from its natural gas exports, the Irish CEO of Qatar's Baladna farm complex began airlifting 300 cows to a warehouse in the desert north of Doha. Another 14,000 are expected by next year.

Throughout the world, food shortages and poor nutrition are causing countries to search for other new agricultural solutions. Some of these methods are mentioned in the earlier post, "Exotic Farming."

Back to the Land

The world needs food. Too many are starving, and too many are unemployed. As summer approaches in the Northern Hemisphere, it is the perfect time for kids to discover the art of farming, not only to feed their families, but also to earn money. Whether at a roadside stand, farmers' market, or open bazaar, there is income to be made by selling vegetables, herbs, fruit, plants, flowers, and seeds. A youth group, for example, grows tomatoes and peppers in a community garden, cooks them, and packages salsa for sale. A bride who wanted her reception to be filled with sunflowers paid neighborhood youngsters to grow them.

     Farming can be simple or sophisticated. There are ready-made kits that include the proper seeds and soils children need for indoor gardens of basil, parsley, thyme, and other herbs that can be used in cooking. These kits come with directions for the amount of light and moisture plants need. Usually plants need 12 to 16 hours of light a day near a window, but strong, prolonged sunlight is harmful. It is a good idea to turn plants around once a week, since they will grow lopsided toward the light otherwise. The best water for plants is tap water that has been left out overnight to reach room temperature and to let some of its chemical content evaporate. Adding eggshells to the water left out overnight enriches the solution.

     It also is fun for children to try to grow a plant from plump apple, lemon, orange, or grapefruit seeds that have been washed and dried. Begin by covering the drainage hole in a 4-inch flowerpot with a thin layer of clean small stones and adding about 2 cups of potting soil up to an inch from the top of the pot. (It is possible to remove insects and disease from any outdoor soil by spreading it in a pan, heating it in an oven at 180 degrees for a half hour, and letting it cool.) Lay several seeds of the same fruit on the soil, cover with 1/4-inch of soil, carefully water with room temperature tap water and repeat when needed to keep soil moist, place in a sunny spot, and see if sprouts develop in 3 weeks or longer.

      At the end of the earlier post, "A Healthy Environment," there is a detailed description for growing an outdoor garden. According to the National Gardening Association, about 40 million households in the U.S. are growing herbs, vegetables, or fruits, because they want to save money and to raise healthy, organic produce. In an item in the AARP magazine (August/September, 2014), frugal living expert Erin Huffstetler claimed many fruits and nuts are very easy to grow and that there are varieties that suit almost any climate. In particular, she mentiond raspberry, blueberry, and strawberry plants, red seedless grapes, cherry bushes, and almond trees.

     In a backyard or community garden, planting a mixture of crops and flowers discourages the pests that like to feast on one particular plant, and using compost cuts down on the need for and cost of using synthetic fertilizer. Using compost, other natural fertilizers and pesticides, mulch, hand-weeding, crop rotation, and earthworms, it is possible to feed the soil, reduce pest infestations, and manage weeds without pesticides, fungicides, herbicides, or other chemicals. (At the end of the earlier blog post, "A Healthy Environment," How Does Your Garden Grow? describes the composting process.) African subsistence farmers even have increased yields by composting and reducing the need for pesticides by growing diverse crops.

      Iroquois Valley Farms in Illinois has come up with a way to help farmers, at any age, become organic farmers. Before leasing a conventional farm of at least 80 acres to a tenant, it takes three years for a diverse rotation of crops and earthworms to rebuild soil fertility naturally. After seven years, Iroquois Valley Farms offers the new organic farmer a purchase option.

     School projects often lend themselves to farming experiments. Water one part of a garden at night and one during the day to see which plants thrive best. Take a photo of each plot. Supposedly, since less water evaporates at night, that section should look better. Or weed one section and not another. Plants that share water and soil nutrients with weeds should be smaller. Over several years a student could document the effect of rotating crops by planting the same crop over and over every year in one section of a garden and, in other years, alternating that crop with different ones, even flowers, in a nearby section of the same garden. If there are trees on the southern and western sides of a building, see how much cooler the temperature is there compared to the temperature on the other sides of the building.

     Experiments with cross-breeding are not new to farmers who have wanted to deter pests, increase yields, and produce crops that tolerate drought, floods, and soil contamination by salt water.The fast growing, high yield rice strain credited with preventing famine in India was the result of cross-breeding a dwarf strain of rice from Taiwan and a taller variety from Indonesia. What is new is the ability to identify the DNA marker or markers in seedlings with desirable genes and to use marker-assisted breeding to produce high yield and other specialized crops. It should be noted, however, that U.S. Department of Agriculture standards do not permit organic farms to use genetically modified hybrid seeds.

     Companies, such as Monsanto and DuPont, have profitable seed patents on genetically modified seeds that grow corn, soybeans, and cotton. Before the U.S. pressured Sudan to expel Osama bin Laden in order to purge the country of involvement in al-Qaeda's terrorist attacks, he used to invite visitors to the laboratory where he was developing high quality seeds appropriate for Africa. According to Lawrence Wright's book, The Looming Tower, bin Laden claimed the Dutch had a monopoly on the best banana pods, and he thought Muslims should devote similar diligence to the process of genetically engineering plants.

     Whether children live in the city or the suburbs, they can develop an appreciation for how farmers around the world produce the food they eat. An earlier post, "The Bees and the Birds," tells how the pollination process for producing fruits and nuts relies on bees. Why do radio stations like WGN have farm reports telling how much soybeans are selling for? Farmers who know corn is going for $6 a bushel figure the cost of growing a bushel of corn to see if they can make a profit. (An earlier post, "Dairy Cows on the Moove," discusses the costs and income of cows.) Children cannot see the sensors embedded in some fields that monitor when water is needed or the drip irrigation methods other fields use to prevent water loss to wind, runoff, and evaporation. But on a drive in rural areas, they may see the long arms of machines irrigating a dry field. At petting zoos, kids can get up close to goats, and at state and county fairs, they can see prize winning animals and produce. In fall, they might visit a farm for a hay ride or walk through a corn maze.

     Away from video games and trash littered highways, in the country, children and adults come face to face with their interrelationship with the natural environment.

Dairy Cows on the Moove

From the newly opened "Millions of Milkshakes" in Bahrain to everyone's need for bone-building calcium, there is worldwide consumption of milk, butter, cheese, yogurt, ice cream, skim milk powder, and whey products from dairy cows. Once prosperity led to better nutrition options in India, for example, current production of milk, formerly a scarce commodity, reached 132 million tons, compared to 22 million in 1970, according to TIME magazine (November 18, 2013). Members of dairy cooperatives, many with only one or two cows, have now made India the world's largest milk producer and a dairy exporter.

      Young 4H members, dairy farmers, and international dairy cow shippers, such as Dens Ocean Livestock Express (livestock@densocean.be) and the ones used by T.K.Exports (livestockgeneticsbytke.com), have a prosperous future. The U.S. has become the world's largest cheese exporter. And with more women working the decline in breastfeeding has led to a boom in baby milk powder sales. West Coast dairy processors in the U.S., as well as a companies, such as Mengniu in China, are taking advantage of this increased demand in China and other Asian countries. There also is a growing world market for whey-based ingredients used in infant formula and human and animal nutritional supplements that is offering new opportunities for dairy products.

     Just outside Harbin in Shuangcheng (northeast China), Nestle has invested in a $400 million Dairy Farming Institute. The aim is to train about 700 students annually to become the dairy farmers, managers, and agribusiness suppliers who will meet China's growing demand for milk in a sustainable manner. In the past, China's dairy industry, which had reported sales of $28 billion in 2014, has had tainted milk problems from poor sanitation and deaths from infant formula.

      In the United States, dairy farmers have an outstanding research facility at the University of Wisconsin's Babcock Center for Dairy Research, named for Dr. S.M. Babcock. The Center is  the largest dairy research institution in the United States. Along with studying how to increase milk production,  students learn how to be business competitors, not only with dairy farmers in Wisconsin, California, New York, Arizona, and Texas, but also in the world market. Since the Center has an outreach program, it provides technical support and information about findings that help dairies, suppliers, government regulatory agencies, and domestic and international dairy organizations.

     Profitability, in the dairy farming business, relies on forecasting demand and careful record keeping and analysis of the cost of the feed cows need to maintain their size and health and to produce milk before excess feed just becomes manure. New Zealand's dairy giant, Fonterra, for example, reported that although more milk was processed into milk powder which has a higher return, rising input costs caused a 53% six-month drop in net profits. The desire to control all aspects of raw material to final product, there is some cross-country vertical integration in the dairy industry. For example, the Chinese company, Pengxin, has acquired both dairy farms in New Zealand and corn farms in Bolivia. China's state-owned Bright Food Group also has controlling interests in dairy producers in New Zealand and in Israel's Tnuva.

    Wisconsin's Dept. of Agriculture, Trade, and Consumer Protection distributes $200,000 in annual grants to farmers to finance studies of dairy feed, housing, and other factors that improve milk production. By calling 855-943-2479, dairy farmers and processors can find out about resources and technical assistance available from the State of Wisconsin. Currently, the State also is offering a $50,000 "Grow Wisconsin Dairy Processor Grant" to a licensed Wisconsin dairy processing plant that writes a proposal that would benefit the industry. The application form, due by February 21, 2014, is available at GrowWisconsinDairy.wi.gov.

      In recognition of Dr. Babcock's contribution to the milk industry, he received awards from dairymen in New Zealand and the Wisconsin legislature. In the future, an award may be given to someone who solves the problem of reducing the climate changing greenhouse methane gas released by cow flatulence. Considering a cow, by chewing its cud, expels 4.42 pounds of carbon dioxide for every gallon of milk it produces, methane is a serious concern. Phosphorus runoff from the cow manure that pollutes lake and other water sources also becomes a major problem when the number of big storms increases. But there also are uses for cow poop, check out the 251 facts in Dawn Cusick's kid's book, Get the Scoop on Animal Poop.

     The Financial Times (April 9, 2014) reported that the major impact of methane on global warming has motivated companies and research institutions, such as the following, to study ways to reduce methane emissions from cows:
     - The Innovation Center for U.S. Dairy in Illinois
     - C-Lock Company in South Dakota
     - The National Institute of Agricultural Technology in Argentina
The U.S. Department of Agriculture is funding a $10 million, 5-year study to determine how the dairy industry can reduce greenhouse gas from methane 25% by 2020.Promising ideas about how to reduce cow-produced methane include: anti-methane grains and dietary supplements laced with basil or garlic, an improved digestive system for cows, scanners that monitor the gas content of cow burps, a strap-on-backpack connected to tubes that collect methane gas from cow stomachs, and a reduction in the world's cattle herd (In the U.S. there are 88 million cattle). To date, these ideas are too expensive to be practical. The Resources Defense Council did mention that methane from cows could power cars and refrigerators, if it could be harnessed.

     Methane is not the only cow-related problem. Phosphorus runoff from manure is a major contributor to water pollution, since it causes the growth of harmful blue-green algae. Limited phosphorus reduction is now achieved by digesters that use an anaerobic process to separate liquids from solids and then capture and burn off methane gas to generate electricity. Another machine that relies on a nutrient concentration system is also being used to remove excess phosphorus. Thus far, however, most raw manure remains untreated.

     It is interesting to note, according to Laurie Winn Carlson, in her book, Cattle: An Informal Social History, that Dr. Babcock never took out a patent on the machine he developed to measure the fat content of milk, because he believed it should be available to all. His invention prevented milk diluted by water to be sold for full price and enabled cows to be ranked not only by the quantity of milk they produced but also by the fat content of their milk. A cow that produces milk with a high fat content is doubly valuable because her eggs can be harvested and sold for artificial insemination. Cattle of the World by John Friend describes the process of harvesting fertilized eggs from dairy cows and freezing semen from bulls known to produce outstanding calves. In the frozen form, semen from desirable bulls can be exported to improve and/or provide cross-breeding with dairy cattle herds anywhere in the world.

     The variety of dairy cow characteristics John Pukite mentions in his book, A Field Guide to Cows: How to Identify and Appreciate America's 52 Breeds, suggests reasons why farmers import specific dairy breeds out of the world's approximately 920 different cow breeds. The Holstein-Friesian dairy cow, found in at least 125 countries, produces the largest amount of milk, but she feeds on a concentrated diet of grain/corn, lives in an environmentally controlled barn, and needs regular veterinary care. In contrast, quite a few dairy breeds, such as the Canadienne, Galloway, Jersey, and Brown Swiss, graze in pastures out-of-doors. The Brown Swiss, like the Jersey, Guernsey, Pinzgauer, and Ayrshire, produces milk with a high butterfat content and also is second only to the Holstein in terms of milk yield. Multipurpose breeds, such as the Maine-Anjou, MeuseRhineYssel, and Normande, are bred for both milk and beef throughout the world. The hides of the Galloway and Pinzgauer also are known for their good quality leather. All dairy cows are usually easy to handle. Some, like the Salers and Simmental, have good mothering instincts. The South Devon, Red Poll, and a few other breeds have long lifespans.

     Whereas, the ships that carried beef cattle across the Atlantic Ocean to England in the 1880s were overcrowded and filthy, health protocols now cover the ventilation, watering, feeding, and manure handling conditions of live animals when they are in transit by ship. Cargo planes also are specially fitted to ensure the safe, humane transit of livestock. At livestockexporters-usa.com,
the online newsletters of the Livestock Exporters Association (LEA) provide dairy cattle exporters with information about policies of the U.S.Department of Agriculture's Animal and Plant Health Inspection Service (APHIS) regarding, among other information, the health certifications of livestock exports and insurance underwriting guidelines for ocean transit of animals, as well as information about new markets, such as Jordan and Iraq.

     Dairy cows are not just traded among agriculturally developed countries. Through the not-for-profit Heifer International organization, children, scout troops, schools, and parents can donate cows to impoverished families around the world. Just go to the heifer.org website to contribute the $500 it takes to donate a cow, or $50 for a share of a heifer, and see some of the happy recipients who have learned to care for their gifts. Since families who receive a cow from Heifer International agree to pass on the first calf offspring to another needy family, each donation is a part of an endless chain devoted to eliminating world hunger and poverty. In Kenya, Heifer International also holds a 40 percent share in a plant that cools and processes milk and seeks new markets for the 6000 households that gain a secure monthly income by bringing their milk to the plant.

The Bees and the Birds

The children catching and releasing fireflies this summer may know they are running after beetles rather than flies or gloworms, and they may be training to protect the world from disease-carrying insects or from dangerous insecticides. While some kids panic at the sight of bees, spiders, and cockroaches, others watch caterpillars walk up their arms and might become the inspectors who keep dangerous insects out of countries or observe, as Rachel Carson did, how deadly an insect repellent like DDT can be.

     Angela Banner, the UK author of the Ant and Bee little board book series, viewed insects as friends. Since the early 1960s, her books have taught children to read, count, and tell time; and to identify animals, colors, and shapes. In the book, Around the World With Ant and Bee, her insects are globe trotters.

     Of course, while some insects are friendly, others carry disease and cause crop damage around the world. As climate change and globalization spread tropical diseases that have become resistant to insecticides, British researchers now have developed genetically modified male mosquitoes that can kill the mosquito larvae of the unmodified females they mate with. To eliminate fungus-causing Dutch Elm disease, it has been necessary to cut down scores of elm trees infected by beetles. And history is filled with stories of the devastation caused by germ-carrying insects. In the Old Testament, the Book of Exodus tells of plagues of mosquitoes, gadflies, and locusts. When children hear about the Black death; the mosquitoes that spread malaria and yellow fever; typhus; the bubonic plague; the tsetse fly that carries sleeping sickness; and lyme disease from ticks, they may want to destroy every ant hill they see. It then may be time to watch The Ant Bully or ANTZ to gain insight into the life of an ant or A Bug's Life" in order to empathize with an ant colony's trouble with grasshoppers. The Beetle Book by Steve Jenkins does what it can to gain respect for beetles.

     Kids can learn to respect the bees, moths, and butterflies that pollinate fruit trees and vegetable and nut plants by carrying the pollen that fertilizes the cells that produce plant seeds. Hives of 25,000 bees were valued at $83,000, when they were stolen in France in 2014. Consequently, it has been a serious problem ever since honey bees suddenly began to suffer colony-collapse disorder in 2006. Time magazine (June 1, 2015) reports that beekeepers lost almost half of their colonies between April 2014 and April 2015.

     To find chemicals to replace the neonicotinoids that kill bees with alternative sprays that control crop damage from other insects has been a challenge. Since new research also suggests the glyphosate chemical in the Roundup herbicide that is an effective weed killer in corn and soy fields has the unfortunate side effect of killing the milkweed monarch butterflies feed on during their migrations to and from Mexico every year, the search for new ways to differentiate between the control of certain insects and weeds and the protection of other endangered insects goes on.

     With as much as almost a quarter of U.S. crops dependent on bee pollination, new hives have appeared in various locations, such as just off a path in the Obrich botanical garden in Madison, Wisconsin, and in the 84-acre campus arboretum at American University in Washington, D.C. In May, 2015 Washington issued a National Strategy to Promote the Health of Honey Bees and Other Pollinators that aims to restore seven million acres of the native flowers that nourish bees

      Normally, hives of honeybees that are native to Europe are rented to farmers when, for example, their apple and cherry crops are in full flower. To foster experimentation with different approaches, the U.S. Department of Agriculture has given a five-year research grant to the Integrated Crop Pollination Project that coordinates the work of government agencies, not-for-profit associations, and private firms. At Loyola University in Chicago, Illinois, Dr. Kelly Garbach lists a number of projects being tried. As disease reduces the European honeybee population, native U.S. bee species might be able to pollinate certain crops, either on their own or in combination with traditional honeybees. A Time magazine article, "The Plight of the Honeybee" (August 19, 2013), told how researchers are trying to produce "a more resilient honeybee" by cross-breeding species. One of the reasons native bees have been overlooked is because they are very small, only half the size of European honeybees. Another reason for bee research is changing climate conditions. If bees could live full time in one location, it would be less costly and more advantageous than trying to figure the best time for beekeepers to provide them. Dr. Garbach plans to identify innovators who can mentor others who want to adopt successful new pollination practices.

       In addition to bees, other insects also perform good works. Insects feed birds, and, of course, for thousands of years, silk cloth has been made from the threads that caterpillars use to make their cocoons. Some insects and birds also kill harmful bugs that feed on crops and live stock. Nonetheless, flies, fleas, ticks, lice, and mites can bother and infect animals. Beetles eat fruit trees and potatoes, and in their form as grubs, beetles eat the roots of corn, pasture grass, and strawberries. Children even may have seen clothes that have been damaged by moths and carpet beetles that eat wool.

    Youngsters interested in discovering which insects are helpful and which are harmful can grow up to be the entomologists that control insect pests. Edward O. Wilson, a global expert on ants, has written the book, Letters to a Young Scientist, that will interest and inspire future entomologists. On National Public Radio, Wilson said that he had a childhood love of "creepy-crawly things" and a passion and persistence to be a scientist who studied them. All children who have seen how fast ants appear on picnic tables can make sure they don't attract flies and other disease-carrying insects by leaving food uncovered in the house. Outside, they can make sure to throw food away only in closed garbage bins.

      Farmers know vast fields planted with the same crop attract swarms of the insects that like to feed on that crop. During the early 20th century, boll weevils destroyed millions of dollars worth of the U.S. cotton crop. In their own gardens, youngsters can learn the benefit of cutting down on the attraction of insects by planting a variety of vegetables and flowers. They also might look for, or hope in the future to help develop, plants engineered to be pest-resistant. (For other innovative ideas related to crops, go to the earlier blog posts, "Back to the Land" and "A Healthy Environment.")

     Artists Hubert Duprat and Kathy Kyle know just how good some insects can be. They give little moth-like caddisfly larvae, that protect themselves by constructing armor by "gluing" together gravel, sand, twigs, and other debris, gold flakes, opal, turquoise, rubies, and pearls to make beads that can be strung together into one-of-a-kind necklaces, earrings, key chains, and zipper pulls.

     As a bit more practical matter, children can be on the lookout for standing water that should be drained to keep mosquitoes from breeding. Although only a handful of the world's 80,000 species of mosquitoes bite and transmit diseases, such as malaria, dengue (black bone fever), and chikungunya, these diseases are life threatening. When kids recognize the importance of protecting themselves from mosquito bites by using insect repellent when they go outside and by installing screens to keep mosquitoes out of their homes, they can start thinking about raising money to protect African children with mosquito nets. On the Internet, the key words, "mosquito nets" lead to a number of organizations that need funds to do this job. UNICEF, for example, has an "Inspired Gift" program to provide the world's poorest children with mosquito nets. Kids and adults can find details about this program at my earlier blog post, "Hope for the Future."

    

A Healthy Environment

Children are growing up with a concern for the environment. Their textbooks cover subjects like acid rain and pollution. School receptacles help them take recycling for granted. From the first Earth Day on April 22, 1970 to the report from the UN-sponsored Intergovernmental Panel on Climate Change (IPCC) on April 6, 2007, young people have seen the environment make news. During their lifetimes, in 2007, former U.S. Vice President Al Gore shared a Nobel Prize for Peace for his contribution to global warming awareness. Some students probably have seen "An Inconvenient Truth," Gore's Oscar-winning documentary film on the subject.

     Carbon dioxide and other gases, such as methane, have the shorthand name, greenhouse gases. The IPCC report, Climate Change 2007: Impacts, Adaptation and Vulnerability, said there was unequivocal evidence that human activities generate the greenhouse gases that trap energy from the sun and cause global warming. Children who know they cannot leave pets alone in a car in the summer are well aware of the dangerous result when glass lets in the heat of the sun without reflecting it back out.

     Greenhouse gases are generated in a number of ways. Garbage dumped in landfills and cattle during their digestive process emit methane. Oil and coal produce needed electricity, but burning these fossil fuels produces trapped heat. Yet, more than a third of the energy consumed in the U.S. comes from oil, and coal generates nearly half of all U.S. electricity. The military requires these reliable sources of power for national security. Throughout the world, the growing industrial and transportation demand for oil, including increased domestic demand in countries that currently export oil, adds pressure to continue an aggressive search for oil shale and other limited oil reserves here and abroad.

     With the growth of world economies fueled by coal and oil, air pollution increases and the greenhouse gases that are heating the earth will continue to melt the polar ice cap and glaciers that reflect heat away from the planet. In 2012, the sea ice in the Arctic Ocean, 1.58 million square miles, was at a record low. Storms build in warm water, and, since the Atlantic Ocean is now warmer than it was in the early 20th century, storms can become more violent. Also, melting ice has caused water to rise, thereby leading to more coastal flooding from storms. As a result of the rising sea level off the coast of India and Bangladesh, New Moore Island disappeared in 2010.

     Glacier melt high up in the Himalayas and the Tibetan Plateau affects the water supply of three billion people in India, Pakistan, China, Nepal, and Bhutan. Increased melting can cause flash floods to overwhelm villages in Nepal and Bhutan. Flooding from Kashmir's record rainfall, the heaviest in 50 years, killed 400 people in 2014. Ultimately, vanishing glaciers could cause competition for limited melt, especially to grow food, among three nuclear powers: India, Pakistan, and China. On March 31, 2017, a court in India granted Himalayan glaciers the status of "legal persons" to give legal representatives a way to protect them. Water shortages are already a fact of life in China, where drought and a dam on the Yangtze River caused the country's largest freshwater lake to drop to 5% of its usual capacity. With China now planning to construct three dams on rivers flowing from the Tibetan plateau, the area's future water shortage could be even more dire. A plan to build a dam on the Irrawaddy River was blocked, because it was expected to produce electricity for China, but flood villages in Myanmar.

    Every year, World Water Day on March 22 calls attention to the fact that the U.N. already estimates over one-sixth of the world's population lacks fresh water for drinking, washing, and cooking. The Water.org website provides information about efforts to come up with solutions to the need for water in developing countries. In a limited way, according to trendwatching.com, a billboard in Peru collects water from humidity in the air. Trendwatching.com also reports that the nonprofit, Water Is Life, is distributing a "Drinkable Book" in Africa, China, and India. The pages not only provide basic health information, but they also act as water filters. Coated with silver nanoparticles, the pages remove 99% of harmful bacteria, when water passes through them.

     All in all, the Intergovernmental Panel on Climate Change projected the following results from an anticipated three to seven degree Fahrenheit temperature increase. Oceans would rise over islands and coastal areas, and already dry desert countries would suffer greater water shortages. There would be lower crop yields, diseases, extinction of up to 30% of plant and animal species, and intense natural disasters. Some 50 million people could become what the IPCC termed environmental refugees.

     The impact of drought on food production is leading to some solutions. Scientists are developing drought-resistant crops with longer roots to reach water and with genes, such as those from ferns and mosses, that enable crops to recover from dry periods. The Swiss firm, PlantCare Ltd, has developed a system to reduce water used to irrigate fields. Soil sensors monitor the water needs for plants at various growth stages, seasonal temperatures, and time of day before a central computer determines the amount of irrigation to deliver to a field as large as one with a 18.6 mile radius. The company also can deliver mobile irrigation systems to fields that do not have permanent ones. Another promising development is the cross-breeding process that mates animals with breeds from Africa and India that already have developed a tolerance to heat and drought. Trendwatching.com reports a truly innovative idea Korean designer, Gyeongwan Kooz, has for turning chopsticks into plants. He would put a seed under a starch cap on each chopstick. After use, the sticks would be placed tip first into soil.

Student action

From two directions, students can take action to reduce global warming and contribute to a healthy environment for the world's population. They can reduce activities that produce greenhouse gases by consuming less electricity for light, heat, air conditioning, transportation, manufacturing, pumping and purifying water, and running appliances. Secondly, they can reduce the amount of refuse that ends up in methane-producing landfills, explore ways to sop up greenhouse gases before they go into the atmosphere, and identify energy alternatives for oil and coal. The book, Green Is Good by Brian F. Keane, might even give them an idea for a career in which they can take advantage of money-making, responsible environmental opportunities.

     Summer offers students an opportunity, not only to read about ways to implement clean energy solutions, but also the chance to make a healthy contribution to the planet by drinking tap water instead of water from plastic bottles that last forever in landfills. Summer also presents an opportunity to plant a rain garden of flowers at the curb to stop dirty water from running into the street and ultimately into streams and lakes. By planting a vegetable garden, youngsters can eliminate the fossil fuel burnt carrying some foods to market. Raising vegetables and herbs can be a major undertaking (See "How Does Your Garden Grow?" at the end of this post.), but planting seeds or tomato plants in any available plot of ground still helps children learn how to care for the earth by watering their "crop," seeing it grow, removing weeds, and harvesting their own food. Young Explorers (YoungExplorers.com) and MindWare (mindware.com) both provide kits that enable children to watch a few carrots, onions, and radishes grow in a Root-Vue Farm year round. In grocery and other stores, kids might find herb plants or seeds and soil to grow rosemary, oregano, thyme, and mint in containers on sunny window sills.  

      Several science kits from MindWare (mindware.com) and Young Explorers (YoungExplorers.com) also enable young people to gain  hands-on-experience with solar power during the sunny days of summer. They will  see how solar panels can power models, including robots, a windmill and airboat. Another MindWare science kit shows how to make an oven that can cook an egg using sun power, and MindWare's Weather Station kit provides experiments that demonstrate the greenhouse effect, while its Clean Water Science kit helps kids understand the process of desalination. Free Spirit Publishing in Minneapolis offers two books that describe water-related projects for children in elementary school (Make a Splash) and those in high school (Going Blue). The company also publishes A Kids' Guide to Climate Change and Global Warming.

     When it's time to go back-to-school, the Environmental Protection Agency (epa.gov) reminds students to purchase notebooks made from recycled paper. The carbonrally.com website challenges students to strive for waste free lunches by carrying a reusable lunch box/bag and putting lunch items in washable, recycled "butter," sour cream, and cottage cheese containers. Carbonrally also suggests substituting reusable, insulated stainless steel bottles for disposable juice boxes and plastic water bottles that require energy for production and emit gases in landfills. If a school does not elect a Commissioner of Environment to student council, students should suggest the need to add this office. At my granddaughter's school, the Commissioner collects and properly disposes of recycled items from each classroom, suggests projects (planting a tree), and finds ways to participate in energy saving and other contests for students.

     Year round, children can recycle their outgrown toys and clothing at a garage sale or thrift store to eliminate the need to use electricity to manufacture new ones. They can save energy as often as they walk or run outside instead of on an electric-powered treadmill and when they walk, bike, or take public transportation rather than ask to be driven to school, activities, or the mall. Finally, they can help save water by sweeping decks, walks, and driveways rather than hosing them down.

     The same beguiling ways children use to persuade parents to buy a new cereal and scouts use to sell cookies can urge adults to:

• Replace incandescent bulbs that release carbon dioxide into the atmosphere with compact fluorescent lights. Turn off lights (and computers), when no one is using them.
• Buy ENERGY STAR (registered trademark) efficient appliances.
• When information is available on clothing tags, company websites, and apps, buy clothing that has received a high Higg Index score from the Sustainable Apparel Coalition for reducing energy costs, use of water and harmful chemicals, and unrecycled landfill fabric. 
• Buy hybrid cars that burn less fossil fuel and electric cars that run on lithium-ion battery packs.
• Paint roofs white to absorb less heat and weatherize windows and attics to prevent heat loss.
• Cut down on the use of fuel to generate electricity for air conditioning by setting summer thermostats at 78 degrees. Keep warm in winter by wearing a heavy sweater or robe rather than turning up the heat past 68 degrees.
• In hot weather, reduce the need for air conditioning by cooking in the cooler mornings and evenings.
• Rediscover awnings. Investigate and use other ways people kept buildings cool before air conditioning.
• Buy produce a a local farmers' market to reduce the fuel needed for transport, and remind them to carry a reusable sack to market and to store leftovers in glass rather than disposable plastic bags and containers.
• Urge parents to buy a mulching mower that leaves grass clippings on the lawn to decompose and   provide moisture to shade roots and reduce watering needs.
• Conserve water by fixing dripping faucets; taking shorter showers; and wetting hands or toothbrush and turning off water while applying soap or toothpaste before turning the water back on again. 
• Pave walkways, drives, and parking lots with porous concrete that enables storm water to flow back into the ground.
• Start petitions to establish recycling centers for electronic goods and to pad playgrounds with recycled, shredded tires.
• Remind adults to recycle ink cartridges at stores where they were purchased.
• Reduce landfill waste that releases methane emissions and pollutes the soil by recycling glass, paper, cans, and plastic and reusing padded mailing envelopes, plastic bags, and other items. Not only do plastic bags last forever in landfills, but they also end up in water where they kill over 100,000 whales, seals, turtles, and birds every yearSa.
• Save trees by getting off mailing lists for unwanted catalogs and viewing brochures and other information that is available online.
• Keep from contaminating soil and water by using safe community disposal methods for used batteries, oil, computers, and energy efficient light bulbs that contain mercury.
• Visit the website, smartpower.org, to learn about the Neighbor to Neighbor Challenge.

 Absorb less heat

Scientists in the field of geoengineering are discovering ways to control global warming by helping the planet absorb less heat. To counteract the loss of reflective ice from shrinking polar ice caps, they would force the ocean's dark open water to absorb more carbon dioxide by fertilizing plankton with iron and phosphorus. Other geoengineering proposals worthy of pro and con study include: sending giant mirrors into space, injecting reflective sulfate particles into the stratosphere, pumping seawater into clouds to help them block more sun, covering the deserts with reflective sheets, and engineering trees to absorb more carbon dioxide.

     As is, one mature tree already absorbs 48 pounds of carbon dioxide according to the website, planetgreen. discovery.com. The 2004 Nobel Peace Prize Laureate, Wangari Maathai, founded a program to plant a billion trees. The United Nations Environmental Programme reports her idea has resulted in 12 billion trees being planted in 193 countries. At school and at home, students can join this effort by planting trees and going to unep.org/billiontreecampaign to record the number of trees they planted.

     Trees have the added benefit of cutting down on electricity consumption. The Department of Energy reports as few as three leafy deciduous trees placed on the south and west sides of a building block sunlight and prevent summer heat buildup indoors. Once these same trees lose their leaves in fall, they let in sunlight to warm buildings in the winter. Evergreen trees on the north and west sides of a building block wintry winds.

    Another idea to keep an eye on is a light-colored coating for black asphalt pavements. Several colors are being tested. They show promise for reflecting up to 40% of energy.

    

Energy alternatives

The need to reduce pollution and greenhouse gases has set off a race to find quick fix solutions and alternatives for fossil fuels. Much like foods that stress their low fat and high fiber content, but fail to mention they contain lots of salt and sugar, remedies proposed as renewable resources, solutions for a clean environment, and the cure for global warming gloss over drawbacks. The Department of Energy's Energy Efficiency & Renewable Energy website (eere.energy.gov) provides information about alternative energy sources, such as solar, wind, water, biomass, geothermal, and hydrogen and fuel cells.

        Students challenged to develop science fair, scouting, or research projects might want to learn more about the peel-and-stick solar panels developed by Chi Hwan Lee and Xiaolin Zheng at Stanford. Unlike the heavy, rigid fixed panels that now collect solar energy, their process creates a flexible film of solar cells. Students should be able to find many uses for this low cost, peel-and-stick solar cell film that can adhere to irregular surfaces and to paper, plastic, window glass, and other materials.

     Students interested in designing a full scale green city of the future will want to keep an eye on Chengdu, the city in southwestern China that is designed to accommodate 80,000 residents in a central core surrounded by green areas and parks. This city aims to develop solar, water, and waste systems that use 48% less energy and 58% less water than towns of a comparable size.

     Students also need to think about tackling some of the problems associated with the following "solutions."

     Although hybrid and electric automobiles reduce carbon emissions from burning fossil fuel, expansion of the electric power grid needed to supply these cars requires additional fuel. Moreover, these cars are too expensive for most buyers, and more battery exchange or electric charging stations are needed to service hybrid and electric autos. According to the website, trendwatching.com, a company in Italy has come up with a solar powered charger for electric vehicles.

     Without any changes, all automobiles can reduce gasoline consumption by substituting a 10% ethanol additive. However, land needed to grow ethanol crops, such as corn and soybeans, has led to food and animal feed shortages, the destruction of rain forests that sop up greenhouse gases, and reduced animal habitats.

     Biodiesel fuel can be extracted from algae that is fertilized by municipal and agricultural wastewater and even saltwater. The carbon dioxide released from burning algae-based biodiesel fuel is less than the amount of carbon dioxide absorbed during the algae growing process. But the cost of establishing a one acre algae pond mixed by motorized paddle wheels is higher than planting corn for ethanol. Bioreactors that prevent microorganisms from invading ponds increase costs even more. Algae ponds also absorb less carbon dioxide in winter and none at night. At the moment, the cost of extracting and refining biodiesel from algae is too high to be economically feasible.

     Homes and businesses can tap into the Earth's underground heat (geothermal energy) to reduce carbon emissions, but front-end installation costs, including small bore drilling to reach the heat source target, can be expensive. Underground lakes of heated water, not available everywhere, are the best sources of geothermal power. However, the permits and other hurdles involved can delay a geothermal power plant from being built for 5 to 10 years.

     A close look at wind power also reveals drawbacks as well as benefits. At best, one estimate suggests wind could generate only 20% of the energy used in the U.S. by 2030. A less reported problem is the number of wind turbines that have caught on fire. Touted as a non-polluting and renewable source of electricity, wind power proponents also stress the industry's potential for job creation. What has been downplayed is the need to spend billions for new transmission lines to connect remote wind farms to urban areas and the need to develop storage capacity to save wind energy for calm days, since wind speed (and sun for solar power) does not ebb and flow with the demand for electricity.

      Apple is seeking a  patent on a process that addresses the problem of storing wind power energy by enabling the heat generated by rotating wind turbines to be stored in fluid. This concept of turning wind power into heated fluid also is being used to generate electricity by turning solar power provided by mirrors into superheated water that becomes the steam that turns turbines. While solar-thermal plants can generate electricity without the pollution and carbon emissions of fossil fuels, they are more costly than coal and natural gas furnaces. Government guaranteed loans were needed to help finance Ivanpah, the solar-thermal plant on the California-Nevada border in the Mojave Desert. Nonetheless, this plant, which also enjoys the guaranteed purchase of its electricity at above market prices from California's utilities, is a model for interested Middle Eastern desert countries, such as Saudi Arabia.

     Further, besides the problems of transmitting and storing wind power, some are concerned about the effect wind farms have on people, especially those living in wide open spaces where the wind power industry pressures local governments to grant noise control exemptions. Noise from wind turbines is described either as a jet engine or a rhythmic hum. In either case, the sound cannot be ignored while watching TV or trying to sleep. One study at a home 1,280 feet from a wind farm in Brown County, Wisconsin, found that even almost inaudible, low-frequency sound coming from outside caused homeowners nausea, dizziness, headaches, and ear pressure similar to motion sickness. According to a report in the "Wisconsin State Journal" (January 4, 2013), Clean Wisconsin, an environmental group that arranged the test and favors renewable energy, contended the study did not conclude that low-frequency sound caused the health problems, because no peer-reviewed studies found health problems related to inaudible sounds. Headaches, dizziness, and nausea also have been claimed by some people affected by the flicker effect of alternating shadows and sunlight caused by the spinning blades.

     Four years from now, wind turbines developed by the Spanish firm, Vortex Bladeless, could overcome some of the criticisms that have prevented windfarms from serving as an alternate source of energy, especially near homes in urban areas. A smaller version of the Vortex bladeless wind turbine, coupled with a solar panel and small battery, could be available to run three lights, a TV, and a refrigerator in homes in Africa and India in 18 months.

     By eliminating moving parts, bladeless wind turbines don't cause the flicker effect, and they are less visually intrusive, almost noiseless, and safer for birds. Yet they are able to collect close to 40% of energy from the wind (less than the 50% some conventional wind turbines collect and generate). Positioned on a magnetic base, the bladeless mast amplifies the oscillation caused by the swirling air passing by the 150-meter tall turbine. Since there is no friction, there is no need for lubricating oils. The lack of mechanical parts also reduces manufacturing and maintenance costs.

     Like Vortex Bladeless, students might focus on the questions about wind power that need answers. Are people making health claims because they do not like the look of wind turbines and the view they obstruct? Could strategically placed trees muffle sound and prevent flickering light and shadows? In terms of zoning, how close should turbines be to homes? What are acceptable low-frequency and high-frequency decibel sound levels? At what noise level do conventional wind turbines constitute a nuisance? What percentage of the nearby population has to be disturbed in order for a community to get an injunction stopping windfarm construction? Should state and/or federal governments prohibit local authorities from imposing regulations that block or ban wind energy projects?

Conclusion

Books and toys are beginning to tap into the concern children show for the planet. A Child's Introduction to the Environment, which comes with a reusable lunch sack, explains the need to protect the air, earth, and sea and lists 15 easy things to do to help the environment. It also includes instructions for conducting experiments, such as detecting smog. Catalogues from MindWare (mindware.com) and Young Explorers (YoungExplorers.com) come with more and more toys that demonstrate how new power sources work.

     Focusing on the environment means focusing on an interrelated system that includes the natural world and all the peoples that inhabit the Earth. Sometime in a child's future there may be no magazine articles, talk shows, television segments, websites, or documentary films devoted to reducing carbon footprints, water conservation, and recycling. These activities could become such a normal part of life that they would merit no more public discussion that how to order fast food, use an ATM, or wear contact lenses do today. If that day comes, kids can congratulate themselves for the healthy world they helped create.


                                                How Does Your Garden Grow?

Different soils have different needs Get a soil test by the state's cooperative extension service or buy a soil test kit at a garden center. Heavy clay soil, for example, requires added sand and nutrients from peat moss, manure, or compost. Acidic soil may need lime; alkaline soil, sulfur.

Dig up and turn over the top layer of soil before planting Remove weeds, rocks, and other debris from garden plot. Add compost or manure fertilizer. Make organic compost from lawn clippings, leaves, kitchen vegetable scraps, and egg shells. Go to the websites, birdsandblooms.com/mag and planetgreen.discovery.com, for additional composting ideas.

Fence out predators, including rabbits and pets Marigolds may deter rabbits, but, to really deter burrowers, a fine mesh fence needs to extend below ground level. Keeping deer out will require a six-foot fence. Pest control may require treatments matched to specific bugs.

Grow vegetables and herbs Check seed packets for advice about when to plant, how deep to plant, and how far apart to space plants. On little sticks, label which vegetables have been planted where. Tall plants, such as tomatoes and cucumbers, require support by tall stakes or small branches, and they should be planted on the north side of the garden to keep from shading lower plants. Vegetables might include: beets, broccoli, carrots, cucumbers, lettuce, onions, peppers, radishes, scallions, snap peas, squash,  and Swiss chard. Plant herbs, such as basil, chives, oregano, parsley, rosemary, sage, and thyme.

Maintain the garden by watering, weeding, and removing withered growths When possible, water with rainwater collected in buckets. Sandy soil needs more frequent watering than clay. Weeds will take over the garden if not pulled out by the root.

A mini-greenhouse provides a year round growing season. The website, fourseasonfarm.com, lists sources for glass greenhouses.