McKibben, who is an author and an environmental activist (and a former New Yorker staff writer), had been alarmed by a conversation he had had about the proposed pipeline with James Hansen, the head of NASA’s Goddard Institute for Space Studies, and one of the country’s foremost climate scientists.
If the Keystone XL oil pipeline was built, it would hasten the extraction of exceptionally dirty crude oil, using huge amounts of water and heat, from the tar sands of Alberta, Canada, which would then be piped across the United States, where it would be refined and burned as fuel, releasing a vast new volume of greenhouse gas into the atmosphere.
“What would the effect be on the climate?” McKibben asked.
Hansen replied, “Essentially, it’s game over for the planet.”
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