Five hundred years after Ponce de Leon explored the area, locals swear by an artesian well with unusual properties, including radioactivity and beneficial magnesium.
A mysterious disease that has already wiped out thousands of U.S. bats is on the move, according to recent tests that confirmed the killer's presence in Tennessee.
On Earth Day, see futuristic developments in eco-friendly architecture, from an algae-powered building to certified Living Buildings.
A new National Geographic book explores wild places as you've never seen them.
Scientists have mounting evidence of centuries-long droughts in the West's distant past. They warn that Californians are now vulnerable to a drought that is measured in decades—or even hundreds of years.
Forests in Africa's Virunga National Park are literally going to pot—sparking renewed conflicts between rangers and rebels.
Forced ashore earlier due to global warming, the bears are finding nutritious treats on land in the form of goose eggs, studies say.
On the 150th anniversary of that trip, historian Adam Goodheart reflects on the rail splitter’s special connection to railroads.
A conversation with authors of new books that explore our world.
The footage may show that Siberian tigers are rebounding in China, where the subspecies had been hunted nearly to extinction.