Greenpeace: "With victory comes responsibility for the air that eight million people breathe, and right now that air is often poisonous"
As he starts his first full day at City Hall newly-elected Mayor Sadiq Khan is facing immediate calls to tackle London's air pollution and make good on his pledge to be the capital's "greenest Mayor"....
Check out all the winners and highly commended finalists from the second annual BusinessGreen Technology Awards
James Murray's speech to the second annual BusinessGreen Technology Awards
The former Energy and Climate Change Secretary opens up about the benefits of regulation, his hopes for a solar-powered future, and his rows with George Osborne
Four world cities make radical commitment at C40 Mayors Summit in Mexico City in a bid to combat urban air pollution