HANSEN, James. "if we burn all reserves of oil, gas, and coal, there is a substantial chance we will initiate the runaway greenhouse. If we also burn the tar sands and tar shale, I believe the Venus syndrome is a dead certainty"

Dr James Hansen, (former head, NASA Goddard Institute for Space Studies in New York City and adjunct professor in the Department of Earth and Environmental Sciences at 100-Nobel-Laureate Columbia University) on post-climate genocide terracide and a lifeless planet (2009): “After the ice has gone, would the Earth proceed to the Venus syndrome, a runaway greenhouse effect that would destroy all life on the planet, perhaps permanently? While that is difficult to say based on present information, I’ve come to conclude that if we burn all reserves of oil, gas, and coal, there is a substantial chance we will initiate the runaway greenhouse. If we also burn the tar sands and tar shale, I believe the Venus syndrome is a dead certainty” (James Hansen, “Storms of My Grandchildren", Bloomsbury, 2009, page 236; quoted in A. Johnstone, “Climate Genocide: 10 billion people set to die this century”, Socialism or Your Money Back, 20 February 2011: https://socialismoryourmoneyback.blogspot.com.au/2011/02/climate-genocide-10-billion-people-set.html ).