Abdul Rahman Waziri was known as a "gentle giant" among the U.S. Green Berets whose lives he worked to protect in Afghanistan ...

Lions and hyenas are constantly at odds. While hyenas can sometimes overpower a female lioness, a powerful male lion is a different story.

In Tanzania's Serengeti National Park, a lioness's fierce defense of her cubs against a male lion has captivated the internet ...

Meet 33 innovative leaders who are using their voices and talents to tackle the planet’s most pressing issues. For decades, the Congo Basin was largely invisible to climate science. Now, a new ...