Archaeologists in Mexico City have discovered a mass grave of what may have been the last warriors to resist conquistador Hernán Cortés, who took the Aztec capital in 1521.

Valentine's Day is coming, and a lot of people have love on the brain—quite literally, according to new medical technology that reveals the "mechanical" side of romance.

Drought, extreme heat, and possibly arson contributed to devastating wildfires in Australia that have killed at least 130 people.

National Geographic researchers are trying to collect DNA samples from these odd duck-billed mammals to determine whether there are separate subspecies.

A boat carrying anti-whaling activists collided Friday with a Japanese whaling ship in Antarctic waters. The whalers claim the Sea Shepherd's action was a deliberate ramming.

Fossils from the world's biggest snake—a prehistoric giant that weighed more than a ton and was more than 42 feet (13 meters) long—have been found in a Colombian coal mine.

Water cannons were fired and rancid butter and paint hurled as Japanese whalers and anti-whaling advocates battled off Antarctica Monday.

A new ocean update to Google Earth allows users to dive underwater, see ocean topography, and watch regions change over time.

Snowcapped Mount Asama in Japan erupted Monday, sending ash raining down on Tokyo. The volcano has been active for hundreds of years.

Each winter, hordes of manatees congregate in the warm waters of the Florida Everglades. And a National Geographic researcher is working to see if the species is recovering.

Fossil samples taken from the coast of New Zealand provide a 50-million-year-old weather record that may change they way scientists think about global warming predictions.

A rail-tunnel project has led to the discovery of artifacts proving that an ancient city is much older than originally believed.

Unearthed from the ruins of a 1,500-year-old, earthquake-hit Jerusalem building, the unprecedented marble figurine sports a short hairstyle indicating it depicts an athlete.

A centenarian tuatara—a lizard-like New Zealand reptile often called a living dinosaur—became a new father Monday.

Something like Spider-Man disguised as a vacuum cleaner, the T-34 security robot shoots nets at intruders and can be controlled via mobile phone.