Drinks giant buys 14 gas-powered Iveco lorries after trial finds biomethane can help cut air and noise pollution
New report predicts total levels of PM10 and NO2 will be slightly lower during 2012 Games in capital, but some areas could still exceed legal air quality limits
Clean Air in London resigns from Defra stakeholder group claiming government has "no intention" of complying with EU air quality deadlines
US contributes $12m to new UN project to cut substances that accelerate climate change and damage health
London Assembly Member Jenny Jones argues the mayoral race could prove critical to boosting the capital's green economy
Clean Air in London launches election manifesto as TfL announces plan to retrofit more than 1,000 buses to reduce PM10 and NOx
Green group argues High Court ruling that forced government to admit pollution breach did not go far enough
Drivers of all vehicles will be asked to turn off their engines when stationary for more than a minute
Report finds so-called 'greenways' have significantly lower pollution levels than nearby busy roads
Court rules limits on sulphur dioxide and nitrogen oxide output need further review, as Keystone pipeline stand-off continues