Sixth Annual John H. Carlson Lecture at the New England Aquarium

"Big Ice: Antarctica, Greenland, and Boston" | An ice sheet is a two-mile-thick, continent-wide pile of old snow, spreading under its own weight and sculpting the land beneath. The ice sheet that buried Boston 20,000 years ago melted when slowly acting features of Earth's orbit raised summer sunshine and atmospheric CO2, warming the climate. The history of that Ice Age can still be read in Boston Harbor, and in the layers of the surviving ice sheets on Antarctica and Greenland. But, more warming may melt those ice records, as break-off of huge icebergs and outburst floods speed sea-level rise. EVENT WEBSITE | This event is now at capacity - watch the lecture via WEBCAST