In Defense of Carbon Dioxide

Harrison H. Schmitt and William Happer: In Defense of Carbon Dioxide - WSJ.com:
"We know that carbon dioxide has been a much larger fraction of the earth's atmosphere than it is today, and the geological record shows that life flourished on land and in the oceans during those times.
The incredible list of supposed horrors that increasing carbon dioxide will bring the world is pure belief disguised as science.
Mr. Schmitt, an adjunct professor of engineering at the University of Wisconsin-Madison, was an Apollo 17 astronaut and a former U.S. senator from New Mexico.
Mr. Happer is a professor of physics at Princeton University and a former director of the office of energy research at the U.S. Department of Energy."