USA

Doubling of renewable energy capacity, rise in natural gas production, and improving energy efficiency contribute to 13 per cent fall since 2007

Over 13GW of capacity added during 2012 as fourth quarter sees wind become the largest source of new power generation

Barack Obama's key appointment raises hopes of a renewed focus on environment in domestic and foreign policy

Mixed ruling strikes down cellulosic biofuel target, but leaves door open for future advanced biofuel goals

Green-card.com argues emigrating green professionals need to remember to address visa issues

Top official hints at plan to reform corporate tax code to drive investment in clean technologies

You don't eat yellow snow, but should you ski on it? An Arizona resort thinks so

Check out the some of newest models on display in motor city

Pew Charitable Trusts research finds revenue from renewable energy investments could total £1.2tr over next six years

More wind power capacity was added last year than any other fuel, according to new government statistics