%0 Report %A Max Wei %A James H Nelson %A Michael K Ting %A Christopher Yang %A Jeffery B Greenblatt %A James E McMahon %A Daniel M Kammen %A Christopher M Jones %A Ana Mileva %A Josiah Johnston %A Ranjit Bharvirkar %D 2012 %T California’s Carbon Challenge: Scenarios for Achieving 80% Emissions Reduction in 2050 %2 LBNL-5448E %8 10/2012