Earth Matters

Diego the giant tortoise has dedicated himself to the survival of his species

Teen interning at NASA discovers new planet

Australian wildlife officials air-drop carrots, sweet potatoes to help struggling wallabies

Climate change may have been the one thing Vikings truly feared

Scientists discover 10 new birds

Why snowy owls are spending the winter in Detroit

Infamous nuclear disaster site transforms into unlikely refuge for animals

Birds and bats have strange gut bacteria, and it might help them fly

Doctors perform cataract surgery on gorilla

Hubble celebrates 30th anniversary with gorgeous 2020 calendar

A beautiful thing happened after coal-fired plants were shut down in the U.S.

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