Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Some of the most enigmatic human-made objects from Europe's late Stone Age — intricately carved balls of stone, each about the size of a baseball — continue to baffle archaeologists more than 200 ...

At New York City's Metropolitan Museum of Art, the planets are just an arm's length away. "The way it interacts with the sky, the way it interacts with the skyline, anyone can appreciate it," said ...

Some of the most enigmatic human-made objects from Europe's late Stone Age — intricately carved balls of stone, each about the size of a baseball — continue to baffle archaeologists more than 200 ...

Researchers are investigating the origin of the giant stone balls in Costa Rica that inspired the opening scenes of "Raiders of the Lost Ark." The ancient stone spheres of Costa Rica were made ...

There has been quite a lot of speculation around these spheres found at sites on Santorini, Crete, Cyprus, and other Greek Islands with theories around their use including being for some sort of sling ...

Here's how ancient cave dwellers used these stone balls. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. For nearly 2 million years, ancient ...

Hundreds of elaborately carved stone balls dating from Prehistoric Scotland have been discovered over the centuries, but their purpose remains a mystery. More than 500 of the stone balls have been ...

LAWRENCE, Kan. — The ancient stone spheres of Costa Rica were made world-famous by the opening sequence of "Raiders of the Lost Ark," when a mockup of one of the mysterious relics nearly crushed ...

FINCA 6, Puntarenas — Everything I had read about Costa Rica’s pre-Columbian stone spheres indicated that it was a total mystery why they were made. But when I visited the museum between Sierpe and ...

The mysterious, almost perfectly spherical stone balls dotting the Costa Rican landscape may soon be up for UNESCO World Heritage status. But who built them circa 600 AD? Are they a map to Atlantis, ...