In 2001, scientists said the ice in Greenland and the Arctic is melting so quickly, it may be gone by the end of the century. In 2006, the spotlight shone on Canada’s north. Scientists discovered a huge chunk of ice broke away in the Arctic, off Ellesmere Island. In 2007, international scientists said the cost of reducing emissions is way less pricey than dealing with the damage of global warming. But not everyone agrees.

Bjorn Lomborg is a ‘skeptical environmentalist.’ He says there are more pressing problems like AIDS, fresh water and poverty. He outlines it all in his book, ‘Cool It: The Skeptical Environmentalist’s Guide to Global Warming.’ And he’s interviewed by (CBC) The Hour’s George Stroumboulopoulos here.