Pro to the question "Is Human Activity Primarily Responsible for Global Climate Change?"
"Climate does change naturally for reasons well understood by scientists. But it does so over thousands or tens of thousands of years – time scales so slow as to be imperceptible to humans…
Human-caused climate changes are different. As the planet’s population has grown to 7 billion people, and as we have learned how to mobilize vast quantities of carbon-based fossil fuels (ironically, created over geologic time scales) to satisfy our short-term energy demands, we have become powerful enough to overwhelm slow geological cycles. We are, for the first time in the 4+ billion year history of the Earth capable of altering the largest geophysical system on the planet – the climate – and we are doing it on a human time scale of years and decades, with consequences we are only just beginning to comprehend. And ironically, our effect on the climate is still slow enough for policy makers, climate contrarians and skeptics, and those simply not paying attention to either actively deny it or to just look the other way, committing the planet to more and more change…
[T]he inability to comprehend the planetary influence of humans isn’t based on reviewing and rejecting the scientific evidence, which is clear to 97-98% of climate scientists publishing in the field. It is based on ignoring or disbelieving it."
"Climate Change, Disbelief, and the Collision Between Human and Geologic Time," forbes.com, Jan. 16, 2012
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:
CEO and Cofounder, Pacific Institute, 1987-present
Member of Editorial Board, Environmental Research Letters, 2006-present
Member, National Academy of Sciences Committee on Himalayan Glaciers, Hydrology, Climate Change and Water Security, 2011-2012
Member, National Academy of Sciences Committee on Climate, Energy, and National Security, 2009-2012
Member, National Academy of Sciences Committee on Ecological Impacts of Climate Change, 2008-2009
Cowritten with Michael E. Mann, "Climate Change and California Drought in the 21st Century," Proceedings of the National Academy of Sciences, Mar. 23, 2015
"Will New Climate Regulations Destroy the Economy? (Hint: No.)," huffingtonpost.com, June 2, 2014
"Extreme Weather: Is This California's Driest Year on Record?," huffingtonpost.com Nov. 20, 2013
"Climate Change Disbelief, and the Collusion Between Human and Geologic Time," forbes.com, Jan. 16, 2012
Cowritten with E.L. Chalecki, "The Impacts of Climatic Changes for Water Resources of the Colorado and Sacramento-San Joaquin River Basins," Journal of the American Water Resources Association, 1999
"Global Climatic Change and International Scurity," Colorado Journal of International Environmental Law and Policy, 1990
"The Effects of Future Climatic Changes on International Water Resources: The Colorado River, The United States, and Mexico." Policy Science, 1988
In 2012 he was responsible for obtaining and releasing confidential Heartland Institute documents, detailing their strategy on climate change research, and revealing some of the funders of their climate change research work.