There are a great number of climat skeptics around. They think the news and information about climate change is a ruse to implement a new world order, carbon taxes, or they simply think it is not a problem. The Financial times on november 22th 2009 still carries a headline 'Conflict still exists about climate ', but the FT should of course be disgarded for the many incorrect stories they carried in the past. How to deal with people telling you it is solar flares that heat up the earth, or cosmic radiation, or that these type of temperature rises are a normal ocurrance. It is hard to give an aswer because people that don't trust the assesment that most scientist (I repeat MOST) scientists agree on must have a personal analysis they think is superior, even if it is founded on nothing. The best strategy is however to keep pounding with facts. Pound away and never give up, because humans may be ignorant at times, they can be educated.