Earth Matters

Meet the gray jay, Canada's new national bird

Why wild giraffes are suffering a 'silent extinction'

Like bees of the sea, plankton pollinate plants

70-mile-long crack develops in Antarctic ice shelf

Beautiful feather stars bring back the '70s

11 animals on the verge of extinction

14 amazing sinkholes

7 interesting facts about Lucy the ancient ape

In typical Texas fashion, urban nature park in Dallas would be country's biggest

Standing Rock protesters celebrate as pipeline is halted

These electric-blue night clouds are expanding around the globe, says NASA

World's highest plants discovered 20,000 feet above sea level