A Europe-wide project asks iPhone users to help monitor levels of pollution in major cities

Environmental groups band together to call on agency to improve laws for disposal of wastewater, often dumped in places that could leak toxic chemicals

Noam Chomsky, Desmond Tutu, Naomi Klein and Vivienne Westwood among group calling for mass mobilisation on the scale of slavery abolition and anti-apartheid movements

Major UNFCCC carbon trading scheme hit by serious corruption allegations involving organised crime in Russia and Ukraine

EU's top climate official warns 'painfully slow' negotiations must be accelerated to seal a meaningful global emissions pact at Paris summit

Billionaire has previously funded renewable energy and low-carbon initiatives and has called coal a 'lethal bullet' for climate change

Coalition of campaign groups and businesses back cleanup plan in a letter to the Guardian, urging the government to ‘provide or stimulate funding'

Involvement with the mine, which critics say threatens endangered species, was exposing the London-based bank to reputational damage

Energy analyst says that for same price as Hinkley Point C, providing 3,200MW of capacity, almost 50,000MW of gas-fired power capacity could be built

'Eco-based' engineering systems may be key to protecting cities that face up to eight times more risk from rising tides, storm surges and floods, says study