Glaciologist Lonnie Thompson studies ice to learn the planet's history.

Ohio State University glaciologist Lonnie Thompson has traveled—literally—to the ends of the earth to collect glacial ice samples, bringing them home by way of yaks, horses, Sherpas, even hot air balloons. Thompson, whose work we featured in an article last May (“Ohio State’s Basement of Glaciers”), will speak about past and contemporary climate change in a public lecture this evening  at 7 p.m. at Andrews House, Otterbein University, 39 W. Winter St., Delaware.

As co-director of OSU’s Ice Core Paleoclimatology Group, Thompson studies the historical record preserved within glacial ice. Both the atmospheric history he has gleaned from the ice’s layers and his own observations of how glaciers are melting have made Thompson an expert on climate change. This evening’s event, sponsored by the Central Ohio Communities Project, Sustainable Delaware and Citizens Climate Lobby, Delaware Chapter, is free and open to the public. For information, email Terry Hermsen, thermsen@otterbein.edu.