Earth Matters

Sea lion episode provides fresh reminder: Don't interact with wildlife

Ringling Bros. takes down its tent forever

Strange distant star is dimming, and scientists don't know why

Fake caterpillars trick ants into spilling secrets

Why California's salmon species are in hot water

Sharks get star treatment in beautiful new photography book

Global warming is making Antarctica green again, and it's stunning

What does it take to save an injured sea turtle?

Rare argonaut octopus washes ashore

Turn your yard into an insect migration stop

Impressively patient orangutan moms may breast-feed for 8 or 9 years

Earth has a new man-made protective 'force field'