Add Yahoo as a preferred source to see more of our stories on Google. An adult koala eats a eucalyptus leaf. Joeys can't break down the toxic, fibrous plants on their own yet. Photograph By David ...

Of all the mammals in the world, humans by far have the strangest diets. As omnivores, we have the most variety of any other ...

Koala mothers have a unique way of feeding their babies. They provide a special substance called pap, which is a form of their own poop. This pap contains essential microbes that help young koalas ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...