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For Tad Patzek, Peak Oil – not climate change – poses the greatest risk to human health and survival on Earth. The chair of the Department of Petroleum and Geosystems Engineering at the University of Texas and co-author with Joseph Tainter of Drilling Down: The Gulf Oil Debacle and Our Energy Dilemma, Patzek does not deny climate change or the notion that the human use of CO2 has helped caused it. It’s just that climate change has already been set in motion, and it will take 80,000 to 100,000 years to reverse it. This is, the Polish-born Patzek says, "for us, an infinite time."
