Bones recently found in a Siberian cave have given researchers a new glimpse into the timeline of an extinct human species. The species – known as Denisovans – at one time lived alongside Neanderthals in the same cave, the evidence showed.

Ancient writings often describe how Celts in the Iron Age would remove the heads of their enemies to keep as trophies.

A mass child sacrifice in Peru that occurred over 500 years ago may have been due to an “El Nino” event. According to archaeologist Gabriel Prieto, the mass grave­– which holds the skeletal remains of 132 children and dated between 1400 and 1450 A.D.– may have been made by the Chimu people in an effort to halt devastating weather.

Apparently, dogs may have been man’s best friend in North America for quite some time. A new study suggests that domesticated dogs have been on this side of the Pacific for roughly 10,000 years.

Saturn’s famous rings are vanishing, so enjoy them while they last. According to NASA scientists, the rings– which are made of mostly of ice and rock, some chunks which are as big as a house– will be completely gone in less than 100 million years.

A new kind of giant dinosaur has been described in Russia. Dubbed Volgatitan, the herbivore belonged to a family of long-necked dinosaurs called sauropods. It weighed 17 tons and walked the earth 200 million to 65 million years ago.

Aside from the stings and ruined picnics, fire ants are famous for their ability to swarm together and self­–assemble bridges, ladders, and even floating rafts. Researchers have now figured out the statistical rules that govern how fire ants form these structures, and the new study could help scientists build swarming, tiny shape-shifting robots.

Researchers have created a new device that can trigger partial limb regrowth in frogs. The findings could lead to limb regeneration in mammals somewhere off in the future.

To survive in the Mesozoic era, dinosaurs had to do a lot of running. Whether it was to get some dinner or to not become lunch, they had to be able to break into a sprint at a moment’s notice. Supposedly, dinosaurs like the Velociraptor could run as fast as 40 mph.

If sometimes you wonder if your dog is angry with you for staying out late, you might be right. New evidence suggests that animals have a clear sense of time, using previously undiscovered neurons that seem to switch on to count off minutes as they wait.