Tuesday, June 24, 2014

Arts and Crafts for Christmas in July

Instead of waiting until December, when the idea of making gifts for friends and relatives competes for time, often unsuccessfully, with holiday recitals, shopping for presents, cookie baking, and parties, now is the time when kids on vacation are looking for things to do. Besides, if a project is messy, this is the season when it can be done outside. Last weekend, for example, my granddaughter and I went to a neighbor's home to do some tie dying in their driveway.

Potato Prints

Potato printing is one project that can produce holiday wrapping paper, gift tags, and cards. When my daughter was only three, I helped her use a big potato, a star cookie cutter, and yellow poster paint in July to turn white tissue paper and blue construction paper into all the items we needed to wrap gifts in December.

     Begin by cutting a potato in half. If you are going to use a cookie cutter for a design, the potato has to be big enough for the cookie cutter to fit on the potato's cross-section. Original designs can be made to fit on any sized potato. For example, you can cut a fir tree out of cardboard to any size. Place it on the exposed half of the potato and cut around it with a knife. A cookie cutter can just be pressed into the potato to make a design.

     The purpose of printing is to be able to repeat a design. Relief-printing uses the raised part of the design, while the area around the design remains white. Consequently, it usually is necessary for an adult to cut away all the potato that is next to the design. Put some paint in a saucer or dish. Carefully dip just the raised part of the potato design into the paint. Stamp it on white paper or another light color. You also can use white paint to create a potato print that will show up on dark paper.

     Hobby stores often sell linoleum blocks, knives, and folded card stock that older children can use to make more intricate designs for holiday cards. Again, the area around the design is removed. Instead of dipping the block into paint or ink, a roller applies paint/ink to the raised design. The card is placed on top of the painted/inked surface and the back of the card is rubbed to transfer the design.

     Kids who learn how to make and use prints, or a master plate known as a matrix, are following a long tradition of those in China, Tibet, and India who first printed multiple copies of Buddhist texts.

Family Tree Scrapbooks

Any relative would appreciate a scrapbook that presented a well-researched, attractive family tree. Begin by collecting pictures of relatives and finding ancestry information from genealogy websites. You might to go to ancestry.com for a free trial to see how much you can discover about your family's background. Once you identify the countries from which relatives emigrated and where relatives live now, you can combine flags, maps, ethnic clothes, and pictures of cities and geographical areas (mountains, rivers, lakes) with photos of relatives and the information learned about births, marriages, children, military service, etc. (The earlier blog posts, "Picture the World," "You Are Here," and "A Salute to Flags," may give you some additional ideas of what to include in a Family Tree Scrapbook.)

Monday, June 16, 2014

Pollution Update

Look around when you attend a music festival, 4th of July celebration, or state fair this summer. Recycling bins, found in schools and at the exits of Target and other stores, have moved outside.

     Paul Abramson, who founded Paolo Verde Consulting, observed that keeping an area clean, especially at potential littering hot spots, during an event eliminates the need for picking up the mess at the end, when everyone is exhausted. He recommends having people (I would suggest cute, smiling teenagers) at bins "making gentle suggestions," such as "You know, that paper plate is recyclable, and we're collecting compost (food scraps) here."

     Abramson also notes that keeping an event site neat appeals to everyone who likes to see immediate results rather than the invisible good their contributions are doing, when they give to the Sierra Club, World Wildlife Fund, or Greenpeace.

     On a larger scale, TIME magazine (June 16, 2014), in an article entitled, "Green Revolution," shows the United States's amazing shift to clean energy in the 21st century. Renewable (water, wind, and solar) power plants went from 682 in 2002 to 1,956 in 2012. While coal plants still provided 39% of U.S. electricity and 75% of emissions from electricity in 2013, cleaner natural gas generated 51% of the electricity added by new plants opened in 2013. Estimates suggest one-fifth of all coal-fired plants have been closed or are scheduled to retire. Although solar and wind power produced only a little more than 5% of U.S. electricity in 2013, they produced 30% of new power added that year and 90% of new power capacity installed in the first quarter of 2014. What is impressive about this added power from wind is the amount by which it decreased carbon emissions, the same effect as taking 20 million cars off the road.

     Even children 6 to 8 years old can learn about the fossil fuel energy cycle from sun to transportation use in Buried Sunlight: How Fossil Fuels Have Changed the Earth by Molly Bang and Penny Chisholm.

     Solar panels, once an exotic that cost $75 per watt generated in 1975, are now available to produce a watt of electricity on home and business rooftops for less than 75 cents. Technology also is meeting the conservation challenge. Products now keep track of individual energy usage and suggest ways to reduce it. Energy efficient LED lightbulbs, compared to incandescent ones, last longer and reduce consumer cost over their lifetimes. It is interesting to note that combined jobs in the solar industry (150,000) and wind industry (50,000) now match the 200,000 in the coal industry.

     Unfortunately, new items, such as plastic bottles and drones, keep multiplying and requiring additional ideas for recycling. According to trendwatching,com, plastic Coca-Cola bottles in Vietnam, and later in Thailand and Indonesia, come with 16 different caps that convert empties into new uses, such as squirt guns, pencil sharpeners, and soap dispensers. Drones also are a new pollution problem. Some have biodegradable wings, but when they crash, their metal pieces and batteries litter the land and oceans.

     Students looking for ways to eliminate pollution and stem climate change can also find a wide variety of suggestions, including the development of bladeless wind turbines, in the earlier blog post, "A Healthy Environment."

   


Thursday, June 5, 2014

The Lure of Shale Oil Independence

With oil trading at over $70 a barrel, demand up, and questions about supply from Iran and elsewhere, interest in fracking has rebounded in September, 2018. Soft oil and gas prices in 2015 and 2016 had dampened enthusiasm for investments in shale oil. BHP Billiton, the Australian-based metals and energy company, took a $4.9 billion write-off in January, 2016, on its shale oil investment in the United States. In the short and medium term, BHP saw shale too expensive to compete with traditional oil and gas production.  BHP expected its shale investments to be profitable in the long run, however. As soon as crude edged toward $70 a barrel in early August, 2018, BHP sold its US shale holdings to BP for $10.5 billion.

     What if there is a shale oil deposit under your home? Fracking, which blasts oil and natural gas out of shale rock, has caused countries to ignore serious consequences. (See the earlier post, "North Pole Flag.")

      President Obama favored energy renewables over fracking. At the moment, wind and solar technologies need fossil fuel backups for windless, cloudy days and nighttime, but Bill Gates, who just announced his intention to invest a billion dollars in clean energy, said government investment in innovations research will lead to even more private investment in technologies that will overcome the need for fuels that contribute to greenhouse gases.

     While ignoring private property rights is just one of the problems associated with fracking, or hydraulic fracturing, protesters in England drew attention to the need to consider this fracking drawback by erecting a satiric sign outside the country home of British Prime Minister, David Cameron, this month. The sign apologized for the inconvenience caused by setting up fracking operations under his home without permission.

     With its economy dependent on income from oil and natural gas, Russia is said to be funding anti-fracking groups. While this may or may not be true, there are legitimate reasons for concern about the fracking process. To  release trapped oil and natural gas, at high pressure, companies pump fluid composed of 99% water and sand and 1% chemicals into dense rock formations thousands of feet below ground. Companies, such as Royal Dutch Shell, which has a contract with China's Sinopec Corp. to exploit shale gas deposits in the Sechuan Basin and Ordos, try to reassure people that the wells they drill are far below drinking water supplies and that they isolate water supplies from fracking fluids by inserting concrete and steel barriers into their wells. Considering the shortage of clean water in eight of the 20 countries with the largest shale gas resources, it does not seem wise to base the safety of water supplies on company assurances.

     Although Algeria, for example, is believed to have the world's third or fourth largest recoverable shale gas reserves, protesters are more concerned about potential damage to the delicate aquifer system that furnishes water for people, animals, and crops not only in Algeria, but also in Libya and Tunisia. Fear that Halliburton's $70 billion hydraulic fracking project would pollute ground water and disturb the environment set off a violent protest in Ain Salah, a rural Algerian town in the Sahara Desert. Early in 2015, demonstrations spread to at least three other towns and Algiers. Deep well drilling to increase the amount of water needed for fracking can have an impact on local water sources and a cumulative effect that causes water levels to drop in lakes farther away. Flowback of the water and chemicals used in fracking plus the radioactive materials picked up deep in the earth is stored in plastic-lined open pits at drilling sites. While some of this toxic stew is trucked away and treated to remove toxins, the rest is released into streams and rivers that pollute drinkable water.

    Since companies are not required to disclose what chemicals they are using, there is no way to test the effect they have underground. I am reminded of the birds on an island in the North Pacific Ocean who are dying because of eating debris from humans over 1,250 miles away. Although bottle caps, cigarette lighters, and razor blades thrown into the ocean disappear, they can do plenty of harm.

     The sand drilling companies blast into shale helps hold cracks open to let oil and natural gas flow to the wellhead. Mining this sand brings noise, truck and rail traffic, and fine silica dust pollution to the population in areas where often there are no nonmetallic mining laws to regulate the hours, trucking routes, and other aspects of sand mining operations. People living near (a half mile away or closer) a sand mine have developed asthma and needed to use an inhaler. They cannot open their windows and have to install air filtration systems in their homes. Since signing a contract with a sand mining company can make a landowner wealthy, individuals have an incentive to ignore the disappearing hills, lung damage, and other consequences that can come with sand mining. Product manufacturers and commodity producers, however, that are having shipping delay problems because they are competing for rail capacity with frac sand are beginning to complain.

    Also, sand mines can use between 420,000 and two million gallons of water a day. To remove impurities from the sand, the chemical, polyacrylamide, which has traces of a known carcinogen, can enter surface and ground water at a mine site from wastewater ponds.

     The Food and Water Watch organization, which began sponsoring a Global Frackdown three years ago, opposes UN efforts to include fracking in its Sustainable Energy for All Initiative. The many problems associated with fracking do not justify including the process in the same category as renewable wind and solar energy sources. The organization, Americans Against Fracking, which pulls together groups working to ban fracking helped New York ban the process after a two-year investigation concluded that fracking could not be done safely. A bill now pending in the U.S. Congress would ban fracking on public lands, where it already has begun in Pennsylvania's Allegheny National Forest, and Virginia has agreed to allow it in the George Washington National Forest.

     Finally, there is concern about the possibility that fracking can cause earthquakes, such as the small ones geologists discovered in Ohio in April, 2014. Clearly, there is a need for tough permit requirements, when a fault already exists near drilling operations.

     As more and more people around the world rely on industrial jobs and demand heat, air conditioning, and cars, care for the environment will come up against pressure to find new sources of oil and natural gas. What projects will students develop to help adults see the unseen effects of dangerous extraction methods?

Wednesday, May 21, 2014

Productive Summer Projects

One of the many nice things about summer is the free time it gives kids to read about other lands and to broaden their interests. Younger children, 3 to 8 years old might like the following books:

  • Brush of the Gods by Lenore Look introduces Wu Daozi, a 7th century Chinese artist
  • Ruby's Wish by Shirin Yim Bridges tells about a Chinese girl who wanted to go to a university
  • The Fortune Tellers by Lloyd Alexander takes children to Cameroon to hear about a poor carpenter who tried unsuccessfully to be a fortune teller. Kids will really like the illustrations, too
  • Bravo, Chico Canta! Bravo! by Pat Mora and Libby Martinez shows how it helps to know more that one language, when a multilingual mouse saves his family that lives in a theatre
An elementary schooler may enjoy The Year of the Fortune Cookie by Andrea Cheng, a Chinese-American girl who visits China and sees the country from her perspective. Teens and young adults can be introduced to Russian history by reading The Family Romanov by Candace Fleming. Using pictures and text, she describes the country's last royal family. 
To find an extensive list of science-related books for various age groups, sample the collection compiled by the iINK Think Tank at inkthinktank.com.

     Kids can escape the fate of some high school students in Wisconsin who didn't graduate with their classes, because they failed to fulfill their community service requirements by learning to help people and animals who are hungry, lonely, have a disease, or are suffering in some other way. Sometimes bringing a flower from the garden or cookies they helped bake on a visit will cheer a grandparent, neighbor, or nursing home resident. To reach beyond their communities to buy mosquito nets, school books, or vaccines, students can raise money for donations from a yard sale, lemonade or produce stand, or sales of jewelry or other crafts they have made. (See other suggestions in the earlier post, "Hope for the Future.)

     The following ideas for helping animals came from the World Wildlife Fund:

1) Young people with a summer birthday can ask guests, instead of presents, to contribute an amount equivalent to their ages to an animal cause.

2) If youngsters are competing in running, swimming, or cycling races this summer, they can ask friends and family members to donate a $1 per mile or lap to an animal cause.

3) Students can start writing a free blog (on blogspot.com, for example) about favorite animals: such as dolphins, sharks, tigers, wolves, monkeys, pandas, and ask blog viewers to contribute to an animal rescue or conservation organization (Some of these organizations are mentioned on the earlier blog post, "Talk with the Animals.)

   

Tuesday, May 6, 2014

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.

Wednesday, April 23, 2014

Infection-Killing Bugs and Antibiotics

Children who like to look under rocks for bugs (See the earlier blog post, "The Bees and the Birds.") have company in the scientific community that is searching for microbes to cure drug-resistant infections from bacteria and fungi in patients all over the world.

     According to an article by David Wahlberg in the Wisconsin State Journal (April 14, 2014), soil-based microbes produced miracle antibiotics after World War II. In Alexander McCall Smith's book, The Minor Adjustment Beauty Salon, for example, a character in Botswana, Africa, attributes cures to the kgaba plant. But recent soil-based research keeps rediscovering the same antibiotics.

     Consequently, kids can get in on the search for ants, beetles, bees, wasps, termites, sponges, and sea squirts that have found new microbes in bacteria that could act as antibiotics in humans.

     At the moment, the U.S. National Institutes of Health is funding a $16 million, five-year study to discover bugs, marine life, and other species that could help produce the drugs needed to treat staph and other infections. (An earlier blog post, "Medical Profession Suffers from International Conflict," tells how blue light phototherapy is being used to treat staph infections.) In January, 2015, the teixobactin antibiotic which has been shown to foil infection resistance passed animal tests without side effects.

     Young people interested in helping collect specimens or in doing a project involving the development of antibiotics from new microbes might get in touch with:
     Dr. David Andes, Chief of Infectious Diseases at the University of Wisconsin School of Medicine and Public Health in Madison, Wisconsin
     Cameron Currie, a bacteriology professor at the University of Wisconsin in Madison, Wisconsin, who is doing research in Florida, Wisconsin, and possibly in Hawaii
     Tim Bugin, assistant professor of pharmaceutical sciences at the University of Wisconsin in Madison, Wisconsin, who is doing research in Puerto Rica and the Florida Keys.

     Also see the later posts, "Global Search for New Antibiotics" and "Bacteria Talk to Each Other."



   

Thursday, April 10, 2014

Respect the Faith

In this holy season, while Jewish people are celebrating Passover and Christians are about to recall the Resurrection of Christ on Easter, it might be a good opportunity for children to think about the need to respect the holy days of all religions. Freedom to exercise an individual's religion was considered a right important enough to be written explicitly in and guaranteed by the First Amendment of the U.S. Constitution. Students may know Muslim classmates who are free to attend religious services on Friday, Jewish children who go to their temples on Saturday, or Christian children who attend church on Sunday. They can ask friends about holy days they may not celebrate, such as the beginning of the Muslim holy season, Ramadan, on June 28, 2014, or the Jewish Day of Atonement, Yom Kippur, on October 4, 2014.

     Learning about foreign countries is not complete without learning that followers of different religions are concentrated in certain parts of the world. Africa has both Christians and Muslims; Asia has Muslims, Buddhists, and Hindus; most Christians are in Europe, Latin America, and North America; the Jewish population is concentrated in Israel and the United States. It is all too easy for those in the majority who practice one religion in a country to oppress the minority. In Syria, the Christian minority suffers at the hands of the Sunni Muslim majority, and in Egypt Islamist mobs have destroyed Christian churches, orphanages, and businesses, according to TIME magazine (April 21, 2014). While a quarter of the Middle East's population was Christian in 1914; fewer than 5% are now Christian, since Christians left to escape harassment and physical violence. Given the usual inclination of a majority to dominate a minority, it is commendable to see that Pakistan and Sri Lanka recognize their countries' minorities on their flags (See the earlier blog post, "A Salute to Flags.").

More details about major religions can be found in the earlier blog post, "This We Believe."