E-Mail IMAGE: Nunavut, a vast region in northern Canada, plays a crucial role in understanding global climate change. New research from Soren Brothers details how lakes in the region could have a... view more Credit: Paul Sibley To arrive at Nunavut, turn left at the Dakotas and head north. You can't miss it--the vast tundra territory covers almost a million square miles of northern Canada. Relatively few people call this lake-scattered landscape home, but the region plays a crucial role in understanding global climate change. New research from Soren Brothers, assistant professor in the Department of Watershed Sciences and Ecology Center, details how lakes in Nunavut could have a big impact on carbon dioxide levels in the atmosphere, and it's not all bad news--at least for now. Brothers examined 23 years of data from lakes near Rankin Inlet. He noted a peculiarity--as the lakes warmed, their carbon dioxide concentrations fell. Most lakes are natural sources of carbon dioxide, but these lakes were now mostly near equilibrium with the atmosphere.