Avalanches are fast, powerful and just plain scary; and Alaska Avalanche School director Blaine Smith knows all about them. Jorge Ribas asks him three questions.
Jorge Ribas is knee-deep in the Arkansas swamp, looking for the Ivory-billed Woodpecker, a bird long considered the Holy Grail of bird watchers and ornithologists.
Greenland's Petermann Glacier is poised to lose a Manhattan-sized chunk, and the Nares Strait was ice-free all year for the first time, according to Greenpeace. Jorge Ribas reports.
Orangutans are clever - using their hands and leaves they can make intimidating kissing sounds causing listeners to think they're bigger than they actually are.
Professor Erle Ellis is proposing a new way to map the Earth's biomes, taking into account the effect humans have had on the planet. Jorge Ribas reports.
Biologist J. Craig Venter helped crack the human genome. His next goal: create life. Jorge Ribas talks to him about the promise and perils of synthetic biology.
Do sci-fi villains have the moonbase market cornered, or will we be living on the moon some day too? Jorge Ribas finds out when NASA's making the next giant leap for mankind.
Attempts to fertilize eggs of a rare female sturgeon caught in the Chesapeake Bay last year proved unsuccessful. Now researchers aim to use that experience in future efforts. Jorge Ribas follows up.
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