Pollutionwatch: how does World Car-free Day affect emissions?

Though air quality appeared to improve, measuring the precise impact of car-less days is difficultLast Sunday peace and tranquillity descended on city centres across the world as many went car-free for the day.This annual event started in the UK, in Bath, in 1994 with a road closure and street party for the Environmental Transport Association’s Green Transport Week. In 1997 it spread to France with En Ville Sans Ma Voiture (In Town Without My Car) in La Rochelle, and by 2007 it spanned 2,0