"All of those are good signs." Scientists thrilled after observing rare behavior from endangered creatures: 'Really, really ...

A look inside the urgent efforts to rescue and rehabilitate sea turtles — from beach rescues to ocean releases, every action helps save a threatened species.

A new species of wolf snake, named Lycodon irwini after Steve Irwin, has been identified on Great Nicobar Island. The slender snake is distinctive for its dark shine and rarity.