meeting began the 10th, sorry for that misinfo earlier.
Caldeira in the Sagan lecture is ambivalent but slightly optimistic, sees threats other than climate change, asks if wildly successful species create the conditions for their own destruction, refers to Great Oxygenation Event. He is rather scattered.
The 50 years of ocean drilling thing ends with Maureen Raymo pointing out that we dont really have a good understanding carbon cycle over megayear timescales.
videos online, chekitout in the "on demand" thingie.
sidd