Two critically endangered takahe, | Maungatautari Ecological Island Trust, Wikimedia Commons

Natural Noah's Arks on Earth

Many animals and plants hold on to existence in fragments of their former homelands, surrounded by a flood of human farms and homes.

April 11, 2014
3:40 PM EDT
Don't call him a lizard: A young adult male tuatara, | KeresH, Wikimedia Commons
Bison graze at Neal Smith National Wildlife Refuge in Iowa. | Richard Hager, USFWS, Wikimedia Commons
Flint Hills National Wildlife Refuge in Kansas. | USFWS Mountain Prairie Region, flickr
Clear cutting of the Atlantic Forest near Rio de Janeiro disrupts one of the most diverse areas on the planet. | Alex Rio Brazil, Wikimedia Commons)

| The golden lion tamarin is only found in the Atlantic Forest.
Some beech trees in Germany's Black Forest are more than 200 years old. | Richardfabi, Wikimedia Commons
Raised bogs like this one in Solling, Germany, were formerly lakes and ponds that were filled with soil. | Flo Gelinher, Wikimedia Commons
Erica mollis | Wikimedia Commons
The Cape Flats Cone Bush, | Wikimedia Commons
Snow dusts a pine forest on the Catalina Mountains, near Tucson, Ariz., with desert lowlands in the background. | Brambleshire, Wikimedia Commons