| http://www.w3.org/ns/prov#value | - decade Skeptic argument 1970s The world is cooling. 1980s The world is not warming. 1990s The world is warming, but it is not due to man. 2000s The world is warming, partly because of man, but it will not be a lot. 2010s The world is warming mostly due to man, but there is no other cheap way to get energy.
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