Filmmaker Bertie Gregory's new documentary special captures the extreme challenges facing the world's fastest land animal.

LOS ANGELES -- In order to keep up with the animals and tell their story, the "Animals Up Close With Bertie Gregory" crew had to push themselves to the limits. As a wildlife filmmaker and National ...

Cosmonauts Oleg Artemyev and Sergey Prokopyev successfully installed the first ICARUS experiment antenna on the outside hull of the International Space Station during a nearly eight-hour space walk in ...

Unlike its interior cousins, gray wolves of Vancouver Island live with two paws in the ocean and two paws on land.

For the first time, Antarctic krill have been found on seafloor vents. One scientist is working to figure out what they are doing there. Kim Bernard, at left, is an expert on Antarctic krill, a ...

National Geographic program features animal odd couples. Jan. 13, 2011— -- There are some friendships that defy explanation. One of nature's fiercest cats isn't supposed to fall for a ...