In the case of mammals, the best-studied group of animals, the fossil record indicates that the “background” rate of extinction, the one that prevailed before humans entered the picture ...

While we haven't quite found any living dinosaurs roaming around (sorry, kids), several presumably ... descriptions of Megatherium. These endangered animals in the U.S. are almost extinct.

Nat Geo Kids’ Mission Animal Rescue initiative includes inspirational videos about endangered and threatened animals and ideas for writing letters and throwing theme parties. If all else fails ...

In just a few years, according to this hypothesis, these frigid and sweltering climatic extremes caused the extinction of not just the dinosaurs, but of up to 70 percent of all plants and animals ...

“When one is endangered, all are in peril” is the theme of the Endling series. To bring that message home, this spring HarperCollins and AWI partnered once again to launch the “Save All Species” ...

This is the first time a cloned animal from an endangered species has successfully ... in order to make cloned offspring,” she told CBC Kids News. “I want to make sure that that is absolutely ...