Most people can only hold their breath for a minute or two, but some land animals have incredible lung capacity. Whether for hunting, hiding, or survival, these creatures can stay underwater far ...

Some of these giant vegetarians were as tall as a 3-story building. Microscopic analysis of their teeth, bones and eggshells reveals how they grew, what they ate and even their body temperature.

More than a quarter of our planet's natural "geomorphs" -- animals such as beavers and hippos that, collectively, can reshape entire landscapes -- are threatened or have shrinking populations, a new ...