A University Professor in U of T’s department of Earth sciences, Barbara Sherwood Lollar has spent nearly three decades studying deep underground water – a subject that’s shed light on everything from life on other planets to the future of our own (photo by Lisa Lightbourn) Barbara Sherwood Lollar has spent more than 30 years studying deep, underground water and its surprisingly vast potential – from offering clues about potential life on other planets to locating valuable energy sources.