Experts will discuss if Boris Johnson is doing enough to improve London's air quality at a meeting of the London Assembly's Environment Committee later this morning.
Guests including the Mayor's Environmental adviser will answer questions from the Committee on Boris' plans to reduce air pollution.
The Mayor's measures include plans to ensure that by 2020 the vast majority of vehicles in the capital's centre during the working day emit low or zero emissions.
He has also suggested plans to introduce an Ultra Low Emissions Zone in central London.
More top news
Combined strike action looks set to bring parts of the Tube and rail network to a halt this week.
Kenny Sansom has been left penniless and feeling worthless after decades of alcoholism.
A close associate of hate preacher Anjem Choudary has been jailed for knocking a boy unconscious because he was cuddling his girlfriend.