What evidence is there that man is causing global warming?

A. CO2 emissions are increasing. In 1870 the amount of CO2 in the atmosphere was about 290 ppm. As of 2010, the amount of CO2 in the atmosphere has risen to 388 ppm. As explained below, very carefully calibrated measurements have confirmed that humans activities are the primary cause of this increase.

http://www.esrl.noaa.gov/gmd/ccgg/trends

http://www.grida.no/publications/vg/clim



Since the industrial revolution, we