There's a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity. Our ...

How much do you know about Antarctica? Take our science quiz to see if you'll freeze up or be as cool as a cucumber. When you purchase through links on our site, we may earn an affiliate commission.

You don’t have to travel far for this one — we’re diving into the incredible planet you’re standing on right now. Earth is the only known world teeming with life, wrapped in oceans, mountains, forests ...