Bacteria and fungi living 30,000 feet above the Earth could be affecting the weather

Microorganisms have been found in virtually every corner of the Earth, from deep sea volcanoes to the tops of frozen mountains. They've also been discovered high up in the atmosphere — but scientists haven't been entirely sure as to nature and extent of these elusive high-altitude organisms. Now, new research suggests… »1/29/13 8:31am1/29/13 8:31am