He commenced by giving a mathematical statement of the effect of local attraction, to a certain depth, on a body placed at the surface of the earth, assuming it to be of uniform density ...

Alexander Behm sails the North Sea and bounces sound waves off its bottom, advancing a new method of depth measurement known as echo sounding. William Beebe and Otis Barton descend in a tethered ...

Various technologies would have been onboard the Stena Immaculate and the Solong at the time they collided in the North Sea. Why didn't they stop a collision? As investigators continue to evaluate ...