Electric vehicle maker to branch out to New York, Seattle and Chicago

Moves to eradicate pollution by chlorine-producing plants

Bill to provide $500bn in rebates fails

Report finds utilities could lose half their earnings with cap-and-trade system

New report predicts 30-fold increase in sales of micro-wind turbines over the next five years

As the US motor giant enters into bankruptcy protection, GM execs insist the relaunched firm will continue to support its high-profile plans for the Chevy Volt plug-in hybrid

Is the world's largest laser a step towards limitless clean energy, or a key component in nuclear weapons research?

New legislation in Ontario and Washington confirm that the march of regional carbon rules is refusing to slow down

Investment programme to focus on green-collar training, insulation, double glazing and energy-efficient appliances

Online mapping project allows residents to compare their neighbourhood's emissions to other areas of the city