Dr. S. Fred Singer is one of the most distinguished scientists in the U.S. In the 1960s, he established and served as the first director of the U.S. Weather Satellite Service, now part of the National Oceanographic and Atmospheric Administration (NOAA), and earned a U.S. Department of Commerce Gold Medal Award for his technical leadership. In the 1980s, Singer served for five years as vice chairman of the National Advisory Committee for Oceans and Atmosphere (NACOA) and became more directly involved in global environmental issues. Since retiring from the University of Virginia and from his last federal position as chief scientist of the Department of Transportation, Singer founded and directed the nonprofit Science and Environmental Policy Project. Full bio (PDF)

Dr. Craig D. Idso is founder and former president of the Center for the Study of Carbon Dioxide and Global Change. He received his Ph.D. in geography from Arizona State University, where he studied as one of a small group of University Graduate Scholars. He was a faculty researcher in the Office of Climatology at Arizona State University and has lectured in Meteorology at Arizona State University. Dr. Idso has published scientific articles on issues related to data quality, the growing season, the seasonal cycle of atmospheric CO2, world food supplies, coral reefs, and urban CO2 concentrations. Full bio (PDF)