Top Predators May Be the Most Important Animals on Earth

Humans have always had a complicated relationship with other predators. Grizzly bears, crocodiles, great white sharks—these are among our planet's most awe-inspiring creatures. Still, we'd never want these deadly animals in our backyards. But new scientific evidence suggests that we need them far more than we realized. »3/09/15 12:30pm3/09/15 12:30pm