Air Resources Board approves target requiring utilities to source 33 per cent of power from renewable sources by 2020
Senate candidates and top business leaders clash over controversial Prop 23 attempt to roll back state's climate change legislation
New bill edges US state towards creation of renewables-ready grid
Oil firms and anti-tax groups secure ballot that could suspend California's pioneering environmental legislation
California Assembly passes legislation to ban free distribution of single-use carrier bags, moving bill to the Senate
Battle to save California's world-leading climate change legislation is heating up with Governor Schwarzenegger vowing to "push back" against oil industry lobbyists
Californian vineyards embrace new sustainability best practices
New mandatory Calgreen building code will ensure new buildings improve energy efficiency, cut waste to landfill and curb water use
Domestic producers of corn-based ethanol warn new sustainability requirements will price them out of the market