Announcement: Crossing 400: The Keeling Curve Reaches a Historic Milestone

Check out OPR’s newest Climate Changers video: Crossing 400: The Keeling Curve Reaches a Historic Milestone  . Ralph Keeling, geochemistry professor at Scripps Institution of Oceanography, UC San Diego, talks about the @keeling_curve and a historic climate milestone: the carbon dioxide concentration in our atmosphere recently exceeded 400 ppm for the first time in human history. Dr. Keeling explains the consequences of this, outlines solutions, and addresses why time is of the essence. 

OPR has also recently uploaded several other new videos to our Climate Changers YouTube Site  , an innovative video initiative to share hot lessons and cool solutions. We invite you to browse through our video library and to become a "climate changer" by joining us in working toward a more resilient California.