A tree-climbing scientist takes the measure of a 3,200-year-old, 247-foot-tall sequoia.
Find out why you shouldn’t panic—at least, not yet.
Visions: Your Shot
Tease your brain with this geometric puzzle.
Freshwater fish are dying. Scientists have a rescue plan.
×DefaultCinematic×DefaultCinematicOrder prints of select National Geographic photos at NationalGeographicArt.com.
In 1418 the town fathers of Florence finally addressed a monumental problem they’d been ignoring for decades: the enormous hole in the roof of their cathedral. Season after season, the winter rains and summer sun had streamed in over Santa Maria del Fiore’s high altar—o
It’s suppertime in the Amazon of lowland Bolivia, and Ana Cuata Maito is stirring a porridge of plantains and sweet manioc over a fire smoldering on the dirt floor of her thatched hut, listening for the voice of her husband as he returns from the forest with his scrawny hunting
More than four-fifths of Earth's organisms known to make light live in the ocean. Their glowing existence has perks and pitfalls.