Earth Matters

Cheetah cub's best friend is a rescue puppy

19 photos of animals enjoying the nightlife

How to watch NASA's rocket-made glowing clouds

Tiny orphaned possum snuggles back to life

Oddsmaker puts SpaceX on Mars ahead of NASA

Project Apollo Archive has the right stuff

Sea turtles wear swimsuits for science

Curious whales size up paddleboarder

Satellites provide glimpse of feral cats' ranges

This is now the deepest lake in Iceland, thanks to melting glaciers

Woman thanks bear for leaving kayak alone ... bear then destroys kayak

Farmer discovers woolly mammoth near Detroit