These models tell us that the observed rise in temperature is very unlikely to be the result of natural variability. These models do a good job of reproducing the observed temperature trend when forced with a mixture of anthropogenic and natural forcing. Global average temperature and sea level are projected to rise under all scenarios considered. See figure 4. Sea level is projected to rise by .09 to .88 meters between 1990 and 2100.
Letterman makes fun of open-heart surgery, too.
Yes, and water is a fundamental part of the human body, yet you can choke on a few grams of it. The article also misleads by confusing fluxes with concentrations. This is not a negligible effect. One of the delightful things about the American economy, of course, is its ability to absorb shocks through its sheer size and adaptability. With this one sentence, the article destroys its own claim that the Kyoto Protocol will have a devastating effect on the US economy.