USA

Law firm launches legal action against food giant Dole for alleged "greenwashing" over supply chain claims

Opposing campaigners call on president to end uncertainty over controversial pipeline linking US to Canadian tar sands

Oil giant receives largest criminal fine in US history from justice department

Christiana Figueres welcomes re-election as UN launches initiative showcasing public-private green projects

Global hotel chain aims to turn 85 per cent of unwanted mattresses across its US operations into new products

Mayor's endorsement could turn climate change into a serious election issue – and it might even embolden Republicans

Bill Clinton and Al Gore among those calling for fresh focus on issue that neither candidate mentioned in televised debates

Report finds emissions saved in US from switching to gas are simply being shipped overseas in coal exports

President insists his 'all of the above' policy will ensure energy independence and denies accusations he is trying to crush coal

Company confirms it has slashed North American workforce by a fifth as a result of ongoing confusion over extension of wind farm tax breaks