Air pollution

Delhi's toxic air is turning iconic Red Fort black - study

Trial of new School Street to get under way

Decision on liveable neighbourhood due next spring

Thousands of pupils take part in air quality project

Aberdeen's unpaid LEZ fines reach more than £500,000

Vans now pollute more than London cabs - analysis

'No better idea' than new charge - council leader

Clean air zone fees used for school safety schemes

How hot weather can make air pollution worse. Video, 00:00:59How hot weather can make air pollution worse

Scrapped Clean Air Zone signs removal begins

Canadian wildfires prompt New York air quality alert

Air pollution linked to dementia risk, study finds

Congestion charge 'necessary step' supporters say

'We've lost 30% of customers since Ulez expanded'

Bank junction to reopen to black cabs as a trial

Clean air bill championed by cross-party MPs

Council teaches children on city's pollution risks

Demand for better air quality targets at schools

Cyclist's mission to measure city air quality

Backlash to council's congestion charge plan

Temporary congestion charge considered for city

TfL now has 2,000 zero-emission buses in London

French MPs vote to scrap low-emission zones