Just to rub it in a bit more

From the National Oceanic and Atmospheric Administration:
http://www.ncdc.noaa.gov/oa/climate/globalwarming.html
Some quotes:
"Are greenhouse gases increasing?
Human activity has been increasing the concentration of greenhouse gases in the atmosphere (mostly carbon dioxide from combustion of coal, oil, and gas; plus a few other trace gases). There is no scientific debate on this point. Pre-industrial levels of carbon dioxide (prior to the start of the Industrial Revolution) were about 280 parts per million by volume (ppmv), and current levels are about 370 ppmv. The concentration of CO2 in our atmosphere today, has not been exceeded in the last 420,000 years, and likely not in the last 20 million years. According to the IPCC Special Report on Emission Scenarios (SRES), by the end of the 21st century, we could expect to see carbon dioxide concentrations of anywhere from 490 to 1260 ppm (75-350% above the pre-industrial concentration). "
"Is the climate warming?
Yes. Global surface temperatures have increased about 0.6°C (plus or minus 0.2°C) since the late-19th century, and about 0.4°F (0.2 to 0.3°C) over the past 25 years (the period with the most credible data). "
"For the Northern Hemisphere summer temperature, recent decades appear to be the warmest since at least about 1000AD, and the warming since the late 19th century is unprecedented over the last 1000 years."
I think I'll just leave it at that.
Is this topic debated? Yes, to the extent that since we don't have great data for all that long, it's not clear what's a normally cyclic trend, and what's due to our influence. Again, to conclude therefore that we have no affect is idiotic. There is MUCH evidence to conclude that we CERTAINLY have an affect, and there is much reason to be concerned about changes in the global climate in any case - whether cyclic or man-made.