Fear and anxiety, though unpleasant, are vital evolutionary emotions. Our brains developed ancient threat responses, preparing us for danger. What is the science behind this inherent reaction, and

Fear and anxiety, though unpleasant, are vital evolutionary emotions. Our brains developed ancient threat responses, preparing us for danger. What is the science behind this inherent reaction, and what are its consequences?

Explore this topic further by watching 'How Fear and Anxiety Drove Human Evolution | Nat Geo Explores'. For more world-class science, exploration, and adventure content, subscribe to National Geographic.

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The Okavango River Basin, a vital water source for a million people and diverse wildlife, is now at risk from human activity. Experience this incredible, yet threatened, wilderness firsthand in

The Okavango River Basin, a vital water source for a million people and diverse wildlife, is now at risk from human activity. Experience this incredible, yet threatened, wilderness firsthand in the final episode of "The Okavango Experience," featuring encounters with lions, hippos, and wild dogs.

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Tennis legend Billie Jean King congratulated Dr. Bernice Sandler, "godmother of Title IX," for receiving an Honorary Doctor of Humane Letters from

Tennis legend Billie Jean King congratulated Dr. Bernice Sandler, "godmother of Title IX," for receiving an Honorary Doctor of Humane Letters from Drexel University. President John A. Fry presented the award during the Institute for Women's Health and Leadership's 20th Anniversary celebration.

Title IX of the Educational Amendments of 1972 prohibits sex-based discrimination in any federally funded educational program or activity in the U.S.

In 2002, mountain bikers and entrepreneurs Jen Zeuner and Anne Keller moved to Fruita, Colorado, seeking world-class singletrack and free time. Over 15 years, these unconventional women reshaped

In 2002, mountain bikers and entrepreneurs Jen Zeuner and Anne Keller moved to Fruita, Colorado, seeking world-class singletrack and free time. Over 15 years, these unconventional women reshaped the conservative town, uniting the community through advocacy, inclusivity, and great pizza. This story is directed by Ben Knight and Travis Rummel.

At Patagonia, we acknowledge that all life on Earth is under threat. We utilize our business, investments, voice, and imagination to address this critical issue.

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Ryan Red Corn (Osage) is co-chairman of NVision, a Denver-based Native youth media non-profit. He earned a B.F.A. in graphic design from the University of Kansas in 2003.

The "stereotype

Ryan Red Corn (Osage) is co-chairman of NVision, a Denver-based Native youth media non-profit. He earned a B.F.A. in graphic design from the University of Kansas in 2003.

The "stereotype threat"—where internal voices appraise and judge us, even when alone—profoundly affects social creatures. This concept was detailed in a New York Times article on October 7, 2012.

Red Corn's work explores the force of this stereotype threat on his people.

"Secrets of the Elephants," a four-part series executive produced by James Cameron and narrated by Natalie Portman, premieres Friday, April 21 on National Geographic. Watch the official trailer

"Secrets of the Elephants," a four-part series executive produced by James Cameron and narrated by Natalie Portman, premieres Friday, April 21 on National Geographic. Watch the official trailer here: Secrets of the Elephants Trailer.

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Allan Savory, President and Co-founder of the Savory Institute in Boulder, Colorado,

Allan Savory, President and Co-founder of the Savory Institute in Boulder, Colorado, addresses desertification.

He explains that desertification, the turning of land into desert, affects two-thirds of the world's grasslands. This accelerates climate change and destabilizes traditional grazing societies.

Savory has dedicated his life to combating this. His work suggests a surprising method can protect grasslands and restore degraded land.

Pat McCabe, a writer, poet, and artist, was interviewed at The Language of Spirit Conference, presented by the