C40 Cities

C40 research reveals cities may have a 60 per cent larger carbon footprint than previously estimated

High Court hearing confirmed for latest air quality legal challenge, as London Mayor Sadiq Khan kicks off new global drive to improve urban air quality

A new partnership between Climate-KIC and C40 aims to make cities the crucible for low-carbon innovation

London's £10 levy on the most polluting cars highlights how bold regulation can help stimulate new markets

Presidents and prime ministers may have stopped talking about climate change, but mayors are determined to deliver a prosperous low-carbon future, argues C40 Cities' Mark Watts

Calls for climate action come ahead of G20 Summit next week, as 250 US city mayors defy Trump with commitment to source 100 per cent renewable energy by 2035

As the United States sounds its intent to pull out of the Paris Agreement, mayors around the world recommit to bold and pioneering actions to cut carbon emissions

Sadiq Khan and Anne Hidalgo announce plans to develop vehicle ratings based on their real world emissions

C40 city leaders insist they 'will not be slowed down' if new president fails to support climate change policy

Four world cities make radical commitment at C40 Mayors Summit in Mexico City in a bid to combat urban air pollution