Hat tip to Peter Sinclair who let us all know about this symposium on his blog.
The link is supposed to start at Dr John Holdren’s talk, but in case it does not, his talk begins at 35:00 into the video.
Dr Holdren’s slides are also available:
Holdren’sTalk_2015-10-29_aaas-carnegie_50th_anniv
ecoquant
here’s the time signature to the video at approximately correct place : https://youtu.be/mZvpJqsbPSI?t=2025
Thanks. I have that time tick kind of thing in the URL to YouTube, but it sometimes does not appear to work. Don’t know why.