Earth Matters

Yellowstone grizzlies to be removed from Endangered Species List

The real reason why eggs come in so many shapes and sizes may be childishly simple

Lightning: How much do you know about this striking weather phenomenon?

California is generating so much solar energy, it's paying other states to take it

Kazakhstan's Altyn Emel boasts deserts, forests — and a sand dune that sings

Why doesn't anyone want to play with this baby elephant?

Portugal's threatened rural landscape earns protective designation

Meet the cecropia moth, the largest moth in North America

Zola the gorilla dances like he's never danced before

Ocean pollution is no laughing matter

Germany's gorgeous Black Forest named UNESCO Biosphere Reserve

Killer whales are hunting fishing boats like prey