Earth Matters

Snuggling with baby penguins and other perks of being a wildlife photographer

Golf courses across U.S. step up to save monarch butterflies

Caretakers work around the clock to save abandoned flamingo chicks

Denmark's ski slope (on top of a power plant) welcomes first guests

The brightest star in the night sky will go dark

10 surprising facts about chimpanzees

Artist inspired late in life creates swirling, meditative sand labyrinths

Black panther spotted in Kenya is first sighting in almost a century

Breathtaking video shows pristine sky above curious facility in Alaska

NASA's record-setting Mars Opportunity rover is officially dead

National Butterfly Center braces for border wall

2 mighty lions share a tender moment in winning wildlife photo