In 1963, Fred Vine, Drummond Matthews, and others found that the crust surrounding the midocean ridges showed alternating bands -- each band magnetized with a polarity opposite the surrounding bands.

A new global analysis of the last 19 million years of seafloor spreading rates found they have been slowing down. Geologists want to know why the seafloor is getting sluggish. A new global analysis of ...

This is the story of how the world travels of a 19th century explorer, two bar magnets and the World War II hunt for enemy submarines led to the invention of the portable fluxgate magnetometer. And ...