A fragment of a bear skull housed for several years in a Canadian museum may be rewriting the history of North America's brown bears.

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.

The U.S. Library of Congress's Veterans History Project collects and preserves soldiers' tales. This Veterans Day, November 11, the project publishes a new book filled with first-person war stories.

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.

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

The bird flu known as H5N1 has killed millions of poultry in east Asia. Now researchers fear it may be tougher and more dangerous to humans than previously suspected.

Environmental activist Maude Barlow believes the world is poised for a freshwater crisis of "monumental proportions." In an interview she shares her views on global water use and abuse.

Environmental activist Maude Barlow believes the world is poised to experience a freshwater crisis of "monumental proportions." The Canadian author shares her views on global water use and abuse with National Geographic News.

The photo editors of the new book In Focus: National Geographic Greatest Portraits share their thoughts on what makes a great portrait and offer advice for aspiring photographers. Interview and photo gallery.

Researchers say Mongolia's last nomadic reindeer herders could disappear unless their ancestral forests are protected. Already some nomads have been forced to eat the reindeer they depend on. Photo Gallery.

This summer movie actors Ewan McGregor and Charley Boorman wrapped up a motorcycle trip across Europe, Asia, and North America. In an interview, they discuss the open road, cranky border guards, and roadside hygiene.

Reenactors following in the footsteps of the Lewis and Clark expedition are encountering weather and experiences that are making the modern journey an adventure in its own right.

Earthbound adventurers outfitted with special kites and harnesses are using wind power to reach some of the most remote spots on the planet.

Hoping to avoid the problems of dimpled ballots and hanging chads, election officials around the U.S. will rely on electronic voting machines for tomorrow's presidential vote. But are the machines secure?