From giant stick bugs to rarely seen sea creatures, these animal videos fascinated us—and led to new scientific discoveries.

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

Egyptian geese are aggressively territorial. During mating, they are monogamous, making it likely the pair fighting the ...

A variety of studies are showing that rough-and-tumble play is important for animals and kids alike.

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 ...

Move over, Game of Thrones—ants can turn armies against their leaders and use subterfuge to take over entire kingdoms, too. This chilling discovery did not originate with a professional scientist, but ...

Climate change is speeding the spread of global pathogens. Can an early-warning system for animal viruses help stop pandemics before they start? During an expedition to the Southern Ocean, microbial ...

National Geographic has narrowed down more than a million photos to just 25, naming them the pictures of the year. Here's a look at the images capturing our planet.