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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Reindeer — known as caribou in the U.S. — are a staple of the holiday season, but one species of the animal isn't having a merry ...

A group of researchers at Finland's University of Oulu discovered how grazing reindeer can help stabilize the natural environment despite our changing climate. As Earth.com reported, the researchers ...

Reindeer crowd around Raisa Kitti as soon as she enters the paddock, sticking their big, velvety noses into the sled full of food she’s towing. They trot behind her as she scatters the pellets in a ...