Relying on research by David Roland-Holst, adjunct professor in ARE, the governor writes:
The University of California estimates our greenhouse gas emissions goals will increase our gross state product by $60 billion and create more than 20,000 new jobs. The time is now for America to transition to a clean-energy economy.... I am very pleased to be able to announce that California is leading the way.
More information on Roland-Holst's study is at http://calclimate.berkeley.edu/.