A Bloody Clot

"WASHINGTON - Vice President Dick Cheney has a blood clot in his left leg, tests revealed Monday. He will be treated with blood thinning medication for several months, a spokeswoman said. Cheney visited his doctor's office in Washington after feeling minor discomfort in his...

Earth's formerly thin ozone layer is recovering (Reuters)

" WASHINGTON (Reuters) - Earth's protective ozone layer, which was notably thinning in 1980, may be fully recovered by mid-century, climate scientists said on Wednesday. Ozone in the stratosphere, outside the polar regions, stopped thinning in 1997, the scientists found...