Of course nobody can be sure about the whether. The issues I think are other: 1) The earth food production is not enough to support the world population. 2) Food production, fossil fuels burning and other human activities will cause ecologic catastrophes. I am a scientist. Global warming is not a theory it is a fact, based on sound and fairly simple scientific principles. If you add to these facts the money printing schemes of the central banks only one conclusion is possible.