It takes a rare politician to stand up and take shots at a climate scientist who’s the darling of the global warmist movement. Even more uncommon is to see a politician take on such a climate scientist—and win the contest.
And so unfolded events last week when Joe Oliver, Canada’s natural resources minister, flew into Washington to build support for the Keystone XL pipeline. Before speaking at the Center for Strategic and International Studies, Mr. Oliver pointedly took aim at James Hansen, the former NASA scientist and one of the godfathers of climate catastrophism. Instead of a gooey marshmallow capitulation on the issue of climate change, Mr. Oliver questioned Mr. Hansen’s tendency to make claims that are at least exaggerations and often outright beyond-the-fringe.
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