When would global warming destroy life on Earth? Study hazards a guess. - CSMonitor.com

Global Warming Theorist gives us 20-25 years till the earth is no longer hospitable yet most scientists say, "The research suggests that from a standpoint of Earth's climate, it would likely take another 1.5 BILLION YEARS, EVEN ACCOUNTING FOR the pace at which human activities are PUMPING GREENHOUSE GASES INTO THE AIR for a runaway greenhouse effect TO TAKE OVER, says Colin Goldblatt, an assistant professor at the University of Victoria in British Columbia who studies the evolution of Earth's climate." or something similar.