Actor's climate change documentary jumps around in its effort to cover a huge amount of ground, but ultimately hammers home its intended sense of urgency
President Obama signs Memorandum to link climate and national security policy as renowned scientists slam Donald Trump for stance on climate action
Latest plank of President Obama's climate change plan will see carbon emissions and fuel consumption of trucks cut by 25 per cent within the next decade
Trump has shown a 'profound ignorance' of science and public health issues through his stance on environmental laws, claim former EPA administrators
US Environmental Protection Agency confirms greenhouse gas emissions from aeroplanes pose environmental threat, paving the way for federal limits on pollution
Presumptive Republican nominee said he would 'at a minimum' renegotiate the terms of the landmark climate pact, claiming its terms are 'bad for the United States'