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The least healthy age group is teenagers. In some ways, they are even less healthy than seniors, most of whom are at least addressing their health problems. Teens have more sexual diseases than any other group, as well as high rates of alcoholism and drug addiction. They also smoke more and eat unhealthy diets. There’s a plague of teenage obesity and Type II diabetes. Dr. Russell Viner, who specializes in adolescent medicine, says, “It seems that adolescents are the only group whose health is getting worse.”
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A Stonehenge-like observatory that’s 2,000 years older than the Stonehenge in England has been discovered in Germany, using satellite photography. And linguists trying to decipher the ancient hieroglyphs of the Mayans now have help: They’ve discovered an Indian tribe that still speaks the Mayan language.
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Airplanes contribute to global warming because their contrails turn into cirrus clouds, which trap heat rising from the Earth. Now there’s a solution: if planes fly 6,000 feet lower, it will reduce contrails by 47%. While we search for solutions to modern problems, scientists have discovered that humans began warming the climate 10,000 years ago, when they became farmers.

Paul Rincon writes in bbcnews.com that researchers tried different scenarios on a computer model of modern air traffic, in which planes flew 2,000, 4,000 and 6,000 feet below current levels, and found that flying 6,000 feet lower reduces contrails by almost half.
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Fifty kangaroos escaped from a French nature preserve 30 years ago are happily living in a forest west of Paris. A park employee says, “The kangaroos’ presence in the forest didn’t happen yesterday. They began making the woods their own after some people who tried to steal them released several of them.” There are even Kangaroo Crossing signs on local roads. Francoise Grangeon, mayor of a town near the kangaroo-infested area, says, “Kangaroos have been part of our daily life for 20 years.”

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