Sea spray content in a stalagmite sheds light on how ocean currents in the Gulf Stream have changed in the past.

Discover a vast, previously unknown world of microbial life that survives—and even thrives—for hundreds of millions of years ...

When Mount Vesuvius buried Pompeii under a torrent of ash in A.D. 79, it also preserved one of the ancient world’s most remarkable artifacts: a massive mosaic depicting Alexander the Great’s triumph ...

The Great Blue Hole is a large marine sinkhole in the Caribbean Sea, some 70 kilometers (43 miles) from the coast of Belize. With a diameter of 318 meters (1,043 feet) and a depth of 124 meters (407 ...