Seven thousand years ago, people living on the Atlantic edge of Europe built a massive wall of stone where land met water.

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

When sonar first picked up a massive, stair‑like object on the floor of the Baltic Sea, the image looked less like geology and more like a movie prop. The structure’s circular outline, sharp edges and ...

JOHN F KENNEDY: To a surprising extent, the sea has remained a mystery. We know less of the ocean of our feet, where we came from, than we do of the sky above our head. MARY LOUISE KELLY, HOST: That ...