About 438 schools in London are in areas exceeding legal air quality levels, according to the London mayor's office.
According to a 2015 study by researchers at the King's College London, almost 9,500 Londoners die prematurely every year as a result of long-term exposure to air pollution. Khan said that this was "the time to stand up and join the battle to clear the toxic air we are forced to breathe".
Polestar 1 makes world debut
The coupe is based on the "Scalable Platform Architecture" (SPA) platform that underpins Volvo's XC60, XC90, S90 and V90 models. On the outside, the Polestar 1 looks like a tricked-out Volvo XC90 saloon, but under the surface, it'll be very different.
Green groups today welcomed the introduction of the T-Charge, but some warned more support is needed to encourage drivers to switch to cleaner vehicles. It is applicable to pre-Euro 4 vehicles in the zone, which covers all of central London to the south of King's Cross station, to the east of Hyde Park, west of the Tower of London and north of Elephant and Castle.
"City Hall says as many as 34,000 vehicles will be affected, but plans have already been set to replace the T-Charge with an Ultra Low Emission Zone from 2019, which is expected to affect thousands more". The fee is in addition to a daily "congestion charge" of $15.18 to enter the city.
Khan said the T-charge will bring in more than $9 million per year, but with regulation and inspection, "We don't make a profit from the T-charge". To mark the launch of the T-Charge a new consumer campaign on air pollution was unveiled last week, featuring everyday objects covered in soot particles.