Climate Disruption - Is 100% Renewable Energy Possible?

In 2014, the carbon content of our atmosphere reached a new high, and global average temperatures were the warmest in human history. On Jan 5, 2015, Governor Brown announced the boldest goals of any in the US: reach 50% renewable electricity generation, and reduce fossil fuel use in transportation by 50%, by 2030.  Are these goals unrealistic, or not bold enough?  What are the obstacles to renewable energy generation? Can we reach 80% or 100% renewables by 2050? Will our electric grid be stable?  This panel, grounded in the science, public policy, and business, will wrestle the overarching issues with renewables to ground, then move to cover practical and political steps for achieving a clean energy future.  You will leave knowing more about how you can help.