London will hold its biggest car-free day event in September in a bid to encourage people to walk, cycle, and use public transport as the UK capital fights air pollution. London’s Mayor Sadiq Khan announced on Thursday that the biggest car-free day event in the city so far will be held on Sunday, September 22 . The event will close to autos 20 kilometers (12 miles) of roads around Tower Bridge, London Bridge, and the City of London and is part of the mayor’s work to encourage Londoners and visitors to cycle, walk, and use public transport to help curb air pollution by reducing car emissions, the office of the Mayor of London said in a statement today. According to the mayor’s office, two million Londoners—out of a population of more than 8 million—live in areas that exceed legal limits for nitrogen dioxide (NO2), including more than 400,000 children […]