London Olympics

Ethical index adds 24 firms, but deletes 13 for failing to meet environmental, social and governance criteria

Games organisers' sustainable sourcing commitment called into question after Sebastian Coe admits food sponsor will truck in 90 per cent of chicken from abroad

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

Retailer secures industry's first 'outstanding' BREEAM standard with flagship green store

ChargePoint Services to install 120 GE charging posts to transport athletes and officials in zero-emission cars

Commission for a Sustainable London 2012 urges organisers to step up commitments to energy efficiency and sustainable sourcing

Green Party calls on London Organising Committee to review purchasing policies, after Arkansas firm bags major ticketing contract

Clean Air in London launches election manifesto as TfL announces plan to retrofit more than 1,000 buses to reduce PM10 and NOx

Survey reveals vast majority of people do not think Olympic Games will have a lasting impact on sustainable cities

Drivers of all vehicles will be asked to turn off their engines when stationary for more than a minute