Desert solar array in Arizona will be used to provide power to 14 US Navy bases in California
Last-minute deal breaks political stalemate to deliver $900m to programmes to cut greenhouse gases
Gleaming pipe sculpture could use solar power to desalinate up to 4.5 billion litres of drinking water every year
New goal would require US state to cut emissions 40 per cent below 1990 levels by 2030
People don't relate to future threats from climate change but seeing images of people dying now from air pollution drives them to act, says former governor of California
Carbon pricing is set to raise $22bn this year, as Vietnam adopts its own carbon market and China tightens cap-and-trade regulations
VW says 11 million vehicles globally fitted with defeat device, which helps cars pass emissions tests
Senate leader says advocates of SB350 could not compete with 'bottomless war chest' of fossil fuel interests
Bill targets state public employees' and teachers' pension plans
Record dry spell can attract investors into sustainability, argues Francis Malone