Revealed: thousands of children at London schools breathe toxic air

Exclusive: 802 schools, nurseries and colleges are in areas where levels of nitrogen dioxide breach EU legal limits

Tens of thousands of children at more than 800 schools, nurseries and colleges in London are being exposed to illegal levels of air pollution that risk causing lifelong health problems, the Guardian can disclose.

A study identifies 802 educational institutions where pupils as young as three are being exposed to levels of nitrogen dioxide that breach EU legal limits and which the government accepts are harmful to health.