Check out these Yellowstone photos taken by members of the NATURE Community. Is your photo in here yet?

Check out these hummingbird photos taken by members of the NATURE Flickr group. Then find out how to add your own.

Winter is here! Check out these wintry photos submitted by the NATURE Community. Then find out how to add your own.

From cushion stars to the red-lipped batfish, explore the undersea creatures of Cocos Island in photos.

Check out these photos of Hawaii submitted by members of the NATURE Community. Then find out how to add your own.

The sycomore fig tree is the center of an entire ecosystem, producing several tons of fruit a year and feeding a greater variety of animals than any other kind of tree in Africa.

Check out these lion photos by members of the NATURE Flickr group, and find out how you can join the community.

Cattle are at the heart of the Masai's economy and their pastoral lives. Tepiit ole Saitoti, a Masai warrior, once wrote, "Without the land and cattle, there will be no Masai."

In the rainy season, Victoria Falls thunders -- nearly 300,000 gallons of water pass over the edge every second. But in the dry season she is reduced to a whisper.