Guardian: The North Circular, which carries more than 60,000 vehicles a day, has the worst traffic fumes of any road in London, according to official emissions figures released under freedom of information legislation.
Exhaust emissions data held by Transport for London shows that a stretch of the road near Walthamstow ranked highest for four of the five most dangerous air pollutants, including benzene, nitrogen oxide (NO2) and fine particles of unburned carbon called PM10s and PM2.5s.
Four of the capital's...