Don Forsyth is a marine geophysicist and earthquake seismologist who concentrates on problems of plate tectonics: How thick are the plates? What drives plate motion? How do new plates form at mid-ocean ridges? Don graduated from the WHOI/MIT Joint Program in 1974 and has maintained connections with WHOI scientists ever since. He is currently chairof the Department of Geological Sciences at Brown University. His first research cruise was on R/V Chain out of Woods Hole. His latest was in the Indian Ocean studying interactions of hotspots and midocean ridges. On shore, he loves playing squash and basketball.