Earth Matters

Man helps sea turtle swim off into the sunrise

Rescuers free a young humpback whale tangled in buoys near Cape Cod

Boost your joy with 'Planet Earth' unplugged

Surprising new evidence suggests moon's interior might be 'wet'

3 new toad species found in Nevada — but one may already be in trouble

Cecil the lion's son killed in trophy hunt

French beaches overrun with odd, yellow blobs

In the fight against HIV, cows emerge as powerful secret weapon

9-year-old literally trips over huge fossil

Why aren't the biggest animals also the fastest?

Listen to the creepy space sounds that surround Earth

England gets its swans in a row