Gore's Global Warming Theory debunked by simply math.

I recently read an interesting article from the Detroit News debunking Gore's global warming theory. A summary of article is:

1. Carbon dioxide is not a pollutant. (We already knew that.)
2. CO2 makes up 3/10 of 1 percent of our atmosphere according to Encyclopedia Britannica or 0.0582% by weight.
3. 57% of CO2 is created by evaporation of the water from earths oceans.
4. 38% is created by breathing animals and decaying plant and animal matter.
5. This leaves 5% left that belongs to man

Of this 5% man-made contribution, 30% is blamed on the US, which means that the US is responsible of 1.5% of global man-made CO2 emissions. Now if Gore has his way and we wreck our economy and way of life by cutting our emissions in half, we would only be reducing total CO2 emissions by a minuscule amount of only 3/4 of 1 percent of the total CO2 emissions on the earth, hardly enough to be even noticed by the climate. According to Gore, does that mean that we are doomed and the earth is truly going to burn up in a matter of months or at the most a few years?