http://skepticalscience.com/climate-change-little-ice-age-me...
OR
http://skepticalscience.com/solar-activity-sunspots-global-w...
Lots of good info on the site. There is a very, very, vanishingly small chance that current climate dynamics aren't caused by humans. Doubling the CO2 in the atmosphere will have consequences. It's inescapable physics.