California Gov. Jerry Brown speaks during the climate summit at United Nations headquarters in New York City on Sept. 23, 2014. Brown has called climate change the world’s most serious issue and wants California to become a global leader in curbing greenhouse gases.
California Gov. Jerry Brown speaks during the climate summit at United Nations headquarters in New York City on Sept. 23, 2014. Brown has called climate change the world’s most serious issue and wants California to become a global leader in curbing greenhouse gases. Craig Ruttle Associated Press file
California Gov. Jerry Brown speaks during the climate summit at United Nations headquarters in New York City on Sept. 23, 2014. Brown has called climate change the world’s most serious issue and wants California to become a global leader in curbing greenhouse gases. Craig Ruttle Associated Press file