In light of this summer's record high temperatures, we find perspective on really hot temperatures. In an experiment, scientists at Europe's CERN laboratory claim to have achieved the highest temperature ever produced by humans — about 5.5 trillion degrees. Audie Cornish and Melissa Block have more.
"We've had time to act — and essentially we haven't acted," says science journalist Michael Lemonick. He describes the threats posed by climate change in his new book, Global Weirdness: Severe Storms, Deadly Heat Waves, Relentless Drought, Rising Seas, and the Weather of the Future.
Critics have charged that the two-year federal investigation into two researchers who wrote a famous report on drowned polar bears was a witch hunt. The probe is over, but the scientists have not been allowed to see its conclusions, their lawyer says.
Kenya's winning marathoners mainly fill up on high-carb vegetarian dishes like ugali, a cornmeal mush, and githeri, boiled corn and kidney beans. It's a bland diet, but it seems to help them excel at middle- and long-distance running.
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