In 1988, when NASA scientist James Hansen reported to Congress that evidence for human-caused global warming was near undeniable, conservative politicians including the U.K.’s Margaret Thatcher, U.S. President George H.W. Bush and Canada’s Brian Mulroney agreed that action was needed. In my home province of B.C., a right-leaning government, the B.C. Liberal Party, introduced a carbon tax in 2008.
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