A variety of studies are showing that rough-and-tumble play is important for animals and kids alike.

From giant stick bugs to rarely seen sea creatures, these animal videos fascinated us—and led to new scientific discoveries.

Studying one of the simplest animals, Stanford's Prakash Lab uncovered how it folds itself into complex shapes—revealing new ...

Unlike tourist-packed destinations, there are places so perilous that only a few dare to visit. The dangers come from violent ...