IT giant reveals $145m equity commitment to new 82MW solar farm in California, completing its 17th renewable energy investment since 2010
President Obama poised to announce fresh climate policies, as California and Mexico seek to establish clean tech hub
Green refurb of 110 Embarcodero will see 7,800 pairs of jeans used as insulation within its walls
Seoul-based company delivers first hydrogen-powered Tucson SUV to customer in California
New York and California among eight states working in partnership to accelerate deployment of zero-emission vehicles
Apple, SolarCity, Intel and San Diego International Airport among group of 140 Californian firms to sign new climate declaration
Fiscal 2015 budget to include new climate resilience funding, as California provided with fresh funds to tackle crippling drought
Experiment successfully produces energy from fusion reaction, although self-powering systems remain a long way off
Controversial rail link the main beneficiary as Governor Brown unveils $850m green project budget
New report from Environmental Defense Fund hails "well constructed" emissions trading scheme's successful first year