So says Princeton physicist William Happer. An excerpt from his testimony to Congress yesterday, via Marc Morano:

Let me state clearly where I probably agree with the other witnesses. We havebeen in a period of global warming over the past 200 years, but there have been several periods, like the last ten years, when the warming has ceased, and there have even been periods of substantial cooling, as from 1942 to 1975. Atmospheric concentrations of carbon dioxide (CO2) have increased from about 280 to 385 parts per million over past 100 years. The combustion of fossil fuels, coal, oil and natural gas, has contributed to the increase of CO2 in the atmosphere. And finally, increasing concentrations of CO2 in the atmosphere will add a warming trend to the natural warmings and coolings of the earth’s surface. The key question is: how much warming will there be, and will the warming, and any other effects of the CO2, be good or bad for humanity? I, and many other scientists, think the warming will be small compared the natural fluctuations in the earth’s temperature, and that the warming and increased CO2 will be good for mankind.

The entire testimony can be read here (.pdf).