Updated: 1 hour 14 min ago
Astronomers have witnessed a triplet of monster black holes swirling in the center of a distant galaxy, a new study says.
Widow of martyred civil rights leader Medgar Evers describes her journey from bitterness to hope.
Liquid water and an energy source top list for what's needed for life to exist on other planets.
It took Billey less than an hour to figure out how to open a childproof jar, so what can't octopuses do?
Crimes from illegal fishing to ivory dealing yield tens of billions of dollars annually.
National Geographic Explorer Steve Boyes explains the Okavango Delta's new designation as a World Heritage Site.
"Risky Business" bipartisan report warns of climate change risks like flooding, disruption to farming, and dangerous heat.
A new research technique aims to study how wind turbines interact with air masses by watching the blades whir during snowstorms.
On cloudy days, monarch butterflies can use a magnetic compass to fly south.
Pictures from around the world depict sites where people celebrate the longest day of the year in the Northern Hemisphere.
A college student has an ambitious plan to send millions of digital messages to the red planet.
Timed for 50 years after a historic Jacques Cousteau effort, Mission 31 advances ocean science and exploration.
New report targets high seas fishing, drilling, and pollution.
Earthquakes, volcanoes, and floods won't outweigh global warming as a driver for migration, suggests a study of Indonesian farmers.
The Large Hadron Collider is set to illuminate more about the so-called God particle and dark matter, experts said in Copenhagen.
Watch baby elephants at a Kenya orphanage play soccer with their feet and trunks.
The museum was meant to heal wounds, but some ask whether the state can truly own its shameful past.
Sheila Hamanaka's new graphic novel for young readers describes an American teenage girl's life-changing encounter with elephants.
Sanga Moses, the founder of Eco-Fuel Africa, talks about how his fuel enterprise is preventing deforestation and improving prospects for rural families.
Doubts about the discovery of primordial gravitational waves are met with added caution by the team responsible for the find.