Photograph by Pat & Chuck Blackley, Alamy Stock Photo Following the slope of Grandfather Mountain, the Tanawha Trail is a 13.5-mile hike along the Blue Ridge Parkway near Boone, North Carolina.

This Harley-Davidson took the world’s first motorcycle ride powered by solar fuel. The bike motored along the shores of Switzerland’s Lake Zurich thanks to a new type of sustainable energy.

In 1925, a small-town trial became a national spectacle, pitting faith against science. Here's what to know about the lasting ...

In his new National Geographic series, Limitless With Chris Hemsworth, the actor completes a test of the body’s reactions to fear: He climbed up a hundred-foot-long rope suspended from a cable ...

When humpbacks get stuck in fishing gear, their friends stick around to help. Are whales altruistic? A new scientific paper and a video present a compelling case the answer is “yes.” ...

Putting the well-being of animals first should be every photographer’s goal. National Geographic photographers share tips on how they do it.

32 Astonishing Photos From a Career Spent Underwater Photographer David Doubilet sets out to astound people with his images—and inspire conservation. See how in this retrospective photo gallery.

The revolutionary Vera C. Rubin Observatory will unveil new insights about our universe—and you can catch a first look at a ...

High-altitude drone captures rare view of Mount Everest. Using a drone modified to fly in thin air, photographer Renan Ozturk captured a stunning 360-degree panorama of the roof of the world.