Blue animals are far rarer than other colorful species, and the reason lies in biology rather than chance. Unlike reds or ...

The stunning Sierra Nevada red fox is one of the nation's rarest and most critically threatened mammals with fewer than 50 ...

I Took Volleys With Roberto Carlos ...

These endangered alpine creatures eluded biologists for years.

For nearly two centuries, the true classification of the red panda was a mystery. Believed to be both a bear and a raccoon, the red panda was unsuccessfully classified by scientists into families it ...