Stephen Harper said he did not make climate change a priority at the recent G8 and G20 summits because it was a controversial issue. That is a bald-faced lie. It may be controversial to him and his climate science denying corporate pals but to the rest of the scientific world it is accepted science.
A recent study published by the National Academy of Sciences, involving 1,372 climate scientists, most considered top researchers in their field, shows that 97 percent agree that global warming is occurring and is being driven mainly by human activity - emissions of carbon dioxide and other greenhouse gases.