Anna Green

Owl feathers’ special structures help the wise birds sneak up on their meals.

Though they’re excellent hunters, it turns out owls probably aren’t any smarter than a lot of other birds.

In the ocean, cuttlefish are masters of disguise. But can they camouflage themselves in artificial environments, like human homes?

There are sparkling glacial lakes, breathtaking sunsets, and mountains disappearing into clouds in this high-def tribute to Grand Teton National Park.

In 1975, Welles provided narration for the short documentary 'Who’s Out There?,' which explored a range of theories and beliefs about alien life.

The event tried to set a Guinness World Record for epic snowball fights.

Watch up close as one Cape sundew plant uses its tentacles to trap and entomb an insect.

Climate can cause a big difference in how much hair a lion grows.