I am skeptical of Global warming being human induced.  There have been multiple reports of the ice caps on the planet Mars melting.  I am not saying humans are not somewhat to blame but my hunch and I have actually spoken to some scientists directly who, quietly will say that they think about 80% of it is due to solar activity with solar flares.  I am not going to say that it is not, but at this point, I take the attitude that some people are taking the approach of theists do their gods and I will remain skeptical.  Nothing personal.  There is cottage industries making money in this debate and I am dubious of people on both sides if they are in it for the money.