I was not commited either way until I saw the Great Global warming swindle. It was proven that all the data that they provided to disprove global warming was completely flawed. I don’t think we can know for sure until it is too late, but I don’t think we can take the chance.
If you know how to read a chart have a look at this:
http://en.wikipedia.org/wiki/Temperature_record_of_the_past_1000_years
