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 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 ...

Going to the beach is good for your brain, according to science. Visiting the coast can help you relieve stress and get more active—and it may even change the way you cope with pain.

“When there is no water, nothing green, the sand becomes very strong, a very fast enemy,” says Sbai. “It takes a lot of land.” The desert is pressing in from every direction.

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.” ...

Discover the influences that have shaped the city over the decades: the cantineros of Little Havana, the architects of Miami Modernism and the Rat Pack performing in glitzy bars ...

Rare Tree Kangaroo Reappears After Vanishing for 90 Years. Once thought to be extinct, the Wondiwoi tree kangaroo has just been photographed in a remote New Guinea mountain range.

Can Socotra, Yemen’s ‘Dragon's Blood Island,' be saved? Between Africa and Arabia lies an island of rare biological oddities—one that’s buffeted now by development, cyclones, and civil war.

SKERRY: And then when I think the time is right, I take a deep breath and I slide underwater. GWIN: He’s on a mission to see a pod of killer whales off the coast of Norway.

A visit to historic or meaningful trees provides a sense of connection to the wonder of the natural world. Vital parts of their ecosystems, trees also spark our imagination, inspire famous books ...

A century after British explorer Robert Scott reached the South Pole, "incredibly rich," rarely seen pictures give an inside look at the ill-fated expedition.

Twin silhouettes are motionless in the night. Above, a silver-veiled moon hints of a sky. Below, Earth is a darkened disk. Sound gives the night depth: Common barking geckos rattle like castanets ...