Paleoclimatology can answer the question of anthropogenic climate change by using fossils to show links between global temperatures and CO2 levels
Dire warnings of imminent human-induced climate disaster are constantly in the news but predictions of the end of the world have been made throughout history and have never yet come true. Even in the brief period of recorded history, natural climate change has always been with us – whether it is the volcanically induced crop failures that helped precipitate the French revolution or the medieval warm period that allowed Vikings to colonise Greenland. So how can we trust that the computer models scientists use to make predictions are reliable?
There is sometimes reluctance to take experts' words for anything and so we would like to be shown the evidence. Unfortunately, that is difficult when the details are buried under hundreds of thousands of lines of computer code which implement mathematical algorithms of mind-numbing complexity. There is, however, one branch of science that can reliably give an answer that is easy to understand and hard not to believe.
See full Article: http://www.theguardian.com/commentisfree/2014/jun/25/three-reasons-climate-change-real-and-humans-cause-it
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