Free colour-coded menu is changed daily according to air pollution levels at pop-up scheme that aims to raise awareness of problem
"I see the air is good today," says the security guard, as he sips his cup of bright green pea soup. "I can tell by the flavour." Staff and visitors here at the central London headquarters of the Royal...
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