Brock-led team collects samples at Crawford Lake to explore possible Anthropocene reference site
(WorldNews Environment)

It`s like taking a photograph of Earth every year for a thousand years. The difference is that the `camera,` in this case, is a freeze core, a long, hollow aluminum tube filled with a mixture of dry ice and ethanol to cool it to minus 80 degrees Celsius. On Tuesday, Aug. 14, a group of researchers from three universities and led by Brock University Professor of Earth Sciences Francine McCarthy used a freeze core to gather layers of sediment spanning the last millennium from the bottom of Crawford Lake in Milton. Master`s student Autumn Heyd (left) and PhD student Andrea Krueger were among a Brock University-led research...