Barack Obama

President instructs agencies to deliver tougher fuel efficiency standards for medium and heavy duty trucks

Fiscal 2015 budget to include new climate resilience funding, as California provided with fresh funds to tackle crippling drought

Statement from US and French presidents promises clean energy partnerships and pursuit of a global climate deal at next year's Paris Summit

New information centres to help farmers and rural communities protect themselves against escalating climate risks

Green NGOs step up criticism of President's "all of the above" energy policy, while welcoming action on climate policy

President reasserts commitment to comprehensive action on climate change, but angers green groups with pledge to boost fossil fuel infrastructure

Republicans and environmental groups both take aim at White House's environmental strategy, albeit for very different reasons

President orders full government review of aging infrastructure to help ensure it remains resilient to climate risks

Obama's commitment to climate action to push environmental policy to the top of the political agenda

Latest phase of White House's Climate Action Plan aims to accelerate investment in renewable energy technologies