Journalist Mark Hertsgaard argues the United States is the only advanced industrial nation that continues to debate the actuality of climate change. Though climate deniers only represent a minority of the country, Hertsgaard says their megaphone is large. He compares them to the tobacco industry lobbyists who denied smoking caused cancer.

Journalist Mark Hertsgaard argues the United States is the only advanced industrial nation that continues to debate the actuality of climate change. Though climate deniers only represent a minority of the country, Hertsgaard says their megaphone is large. He compares them to the tobacco industry lobbyists who denied smoking caused cancer.