Those who say we are causing global warming ignore the fact that 95 percent of greenhouse gases are water vapor. The remaining 5 percent is less than half carbon dioxide. Of the carbon dioxide in the atmosphere, less than half is caused from fossil-fuel-burning engines; most is created by rotting leaves, volcanoes, forest fires, etc. Plants need carbon dioxide to thrive, and farming and natural plants consume tons of carbon dioxide. Putting restrictions on fossil- fuel-burning engines will not reduce global warming. But implementing these restrictions will seriously harm the economy. The economy is vital to the well-being of our society -- not just well-to-do folks, but everyone. The Modesto Irrigation District has already talked about raising rates because of its efforts to reduce carbon dioxide emissions.