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Debates on climate change is not just about the concentration of CO2 in Earth's atmosphere. One very active part of the on going debate is the role of methane, and if increase methane leaks from natural gas is acceptable trade for decreased CO2 emissions from coal. To name other common debates, we see people argue over the effectiveness of carbon emissions trading, nuclear vs renewable, cows vs cars, boats vs airplanes, and the effectiveness if planting trees. A common theme here is that what get disputed is usually the strategy to combat climate change rather than the fact of climate change.