Pumice rafts - the debris left behind in the ocean from volcanic eruptions - are being tracked over time to see how ocean currents flow.
Kevin Hamilton
Kevin Hamilton is an Emeritus Professor of Atmospheric Sciences at University of Hawai at Manoa and Retired Director of the International Pacific Research Center (IPRC). His research deals with climatology, atmospheric sciences, environmental science, stratosphere and quasi-biennial oscillation. He currently serves as an editor for the journal History of Geo- and Space Sciences.