Some extinctions feel final, but history has shown that species can vanish for decades - even centuries - before resurfacing when conditions are right. Using the best available evidence, we rank ...

By Nan Lund It has been more than 100 years since the White House was petless. In fact, there have been only two presidents besides Donald Trump who did not […] ...

A new clip shows three bears—what look to be a sow and two cubs—running across a powdery groomer. Skiers strapped to boards ...

Wolves are experts at surviving in desert, forest, mountain, and Arctic habitats, generally relying on safety in numbers as ...

Such tools could help scientists track population sizes or recognize aggressive animals that have attacked humans ...