Another eruption of this active volcano isn't the only pending disaster facing Washington's Mt. Rainier. Climate-related disasters are springing up on this mountain, resulting in long-lasting effects downstream.
Cave formations may offer a new chance to track climate history back thousands of years. Discovery News' James Williams climbs below the surface to learn more.
Surfing huge waves can be deadly - and exhilarating. Same goes for the wipe outs. One of the sport's most extreme surfers talks James Williams through the experience.
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.
The Mekong region in Southeast Asia is home to more than a thousand new plant and animal species, says the World Wildlife Fund. But challenges are ahead in balancing conservation and growth.
Jorge Ribas reports.
Sea levels are rising and oceanographer Eric Leuliette is busy using satellite data to learn more about it. Jorge Ribas gets him to sit down for three questions.
For backcountry trekkers in Alaska, avalanches come with the territory. The Alaska Avalanche School teaches them how to spot, avoid and provide rescue after one. Jorge Ribas goes to class.
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.
Female polar bears and their cubs are swimming increasingly longer distances causing higher mortality rates for the young bears, a new study finds. Martin Berman reports.
As sea ice decreases in both coverage, thickness and age, polar bears could have fewer cubs, according to new research. Jorge Ribas reports on the findings from the Arctic.
Massive super-herds of walrus are being forced onto dry land because of a lack of sea ice, the World Wildlife Fund reports. New video shows an estimated 10,000 animals gathered in Point Lay, Alaska.
When natural disasters strike - be it tsunamis, earthquakes or floods - they often lead to high death tolls. James Williams discovers how the grisly estimates are attained.
Could a single virus destroy humankind as seen in films like Zombieland or shows like The Colony? Why or why not? And if they could, what would such a virus look like? James Williams gets the answers from a virus expert.
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.
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.
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