EXPEDITION: Permafrost thaws

"Bo Elberling and Morten Rasch investigate the Arctic tundra’s contribution to global greenhouse gas budgets. We hear about methane, carbon dioxide and laughing gas, and the role they play in global warming. The focus of the film is on the methods they use to extract boreholes and store them until they can be analysed, and also how they use different kinds of sensors to gather their data." Michael Haslund Video by Michael Haslund and Daniel Dencik from the 2011 "Expedition to the End of the World"