What triggered the change in climate that caused the Last Glacial Maximum (LGM) — the largest expansion of ice cover across the planet in the last ice age — remains a mystery, one that Zander Roman of Belfast wants to help solve. When he begins his paleoclimate Ph.D. program at the University of Maine, Roman read more NSF Graduate Research Fellowship supports Roman’s research into Last Glacial Maximum – A. Putnam, G. Denton