Peter Puleo

Four people stand on an inflatable raft in a body of water holding to a large piece of scientific equipment.

GeoCal researchers excavating sediment cores from the Mel3 lake site. (Courtesy of Peter Puleo/GeoCAL)

Northwestern University
Tubes of Greenland sediment cores reveal thousands of years of climate change clues for Ph.D. students in Northwestern University’s GeoCAL, the Geoperspective on Climate and Life, laboratory.