In August 2006, the crew of the yacht Maiken, sailing out of the Vava'u island group, encountered a remarkable "stone sea." The phenomena they spotted were a series of pumice rafts resulting from a ...

A new technique will aid in predicting the dispersal and drift patterns of large floating ‘islands’ of pumice created by volcanic eruptions at sea. Known as pumice rafts, these large mobile ...

It’s true — some rocks can float on water for years at a time. And now scientists know how they do it, and what causes them to eventually sink. X-ray studies at the Department of Energy’s Lawrence ...

Since August a large accumulation of pumice has been drifting in the Southwest Pacific towards Australia. Researchers have now identified the origin of this pumice raft. It is a so far nameless ...

Stones do not float in water. This is a truism. But there is hardly a rule without exception. In fact, some volcanic eruptions produce a very porous type of rock with a density so low that it does ...