The Canadian Arctic is one of the world's last great wilderness regions and is facing pressures concerning natural gas exploration. The Mackenzie Valley Pipeline, the largest construction project in Canada in more than a century, will bring natural gas from the Far North to Alberta's Tar Sands for oil extraction and refining. David Suzuki re-examines the Berger inquiry of the 1960s. Suzuki accompanies Tom Berger as they confront issues of environmental impact, climate change and ecological change.