Once harvested almost to extinction in the northeastern U.S., beavers have returned in such huge numbers that they are becoming a nuisance in some areas.
Lake Vostok, an Antarctic freshwater lake buried by 2.5 miles (4 kilometers) of ice, may host a diverse community of microbial life-forms, scientists say.
The European Union's heavy fishing off West Africa may be causing a rise in poaching of Africa's wildlife as hungry Africans seek alternative protein, a new study suggests.
Braving some of the world's coldest temperatures and wickedest winds, researchers are drilling ice cores in Antarctica to answer questions about global climate change.
Scientists have found that the ice in Greenland and the Arctic is melting so rapidly that most of it could be gone by the end of the century. Low-lying lands could be flooded and polar bears could go extinct, among other possibilities.
Birder Mathew Tekulsky reveals the effectiveness of a concealed location for viewing birds, as he describes the behavior of quail and jays in his yard.
With The Polar Express chugging into movie theaters and a fictional North Pole, we're finding out that sometimes truth really is stranger than fiction. Photo Gallery
