Video: Ralph Keeling on Crossing 400 Parts Per Million


Scripps Institution of Oceanography, UC San Diego, Geochemist Ralph Keeling is interviewed for the State of California video series Climate Changers: Hot Lessons and Cool Solutions. In it, Keeling discusses the history of the Keeling Curve record of atmospheric CO2 concentrations and the significance of those concentrations surpassing 400 parts per million for the first time in human history in May 2013.

The video was produced by Scripps for Governor Edmund G. “Jerry” Brown’s Office of Planning and Research (OPR). OPR serves the governor and his cabinet as staff for long-range planning and research, and constitutes the comprehensive state planning agency.

Related Video: Video: Ralph Keeling on Crossing 400 Parts Per Million

Sign Up For
Explorations Now

explorations now is the free award-winning digital science magazine from Scripps Institution of Oceanography. Join subscribers from around the world and keep up on our cutting-edge research.