Professor in the Department of Atmospheric Sciences at Texas A&M University
Pro to the question "Is Human Activity Primarily Responsible for Global Climate Change?"
"Contrary to what one might read in newspapers, the science of climate change is strong. Our own work and the immense body of independent research conducted around the world leaves no doubt...
There is no question that natural causes, such as changes in energy from the sun, natural cycles and volcanoes, continue to affect temperature today... But despite years of intensive observations of the Earth system, no one has been able to propose a credible alternative mechanism that can explain the present-day warming without heat-trapping gases produced by human activities...
[H]umans have taken over from nature as the dominant influence on our climate."
"On Global Warming, the Science Is Solid," Houston Chronicle, Mar. 6, 2010
Experts Individuals with PhDs, heads of government, members of federal legislative bodies, and individuals with graduate degrees and significant post-graduate involvement in fields relevant to the study of climate. [Note: Experts definition varies by site.]
Involvement and Affiliations:
Professor, Department of Atmospheric Sciences, Texas A&M University
Senior Policy Analyst, White House Office of Science and Technology Policy, 2000