Far off the coast of Brittany, a line of stone blocks lies hidden beneath the Atlantic, preserved where dry land once met the ...

Seven thousand years ago, people living on the Atlantic edge of Europe built a massive wall of stone where land met water. Today, that wall lies nearly nine meters underwater, still intact, stretched ...

An autonomous robot with a large gripper can transform a pile of boulders into huge stone walls without mortar – learning on its own how to place each irregularly-shaped stone as the next building ...