Heathrow

Kings Cross development installs first of three gas-powered CHP units, as Heathrow plans summer launch for Turboden biomass system

Independent mayoral candidate wants environmental considerations to be "an intrinsic part of the way London operates"

Ministers to rethink decision to rule out runway after warning that trade will move elsewhere unless airport expanded

Reports suggest Conservatives and Lib Dems are already clashing over controversial plans for new airport

Boris Johnson angers green groups by claiming a new South-East hub is needed to avoid exporting jobs and emissions abroad

Conservation and residents' groups angered by mayor Boris Johnson's support for more runway capacity

Farmgen starts work on £30m anaerobic digestion project as Heathrow signs deal to turn food waste into fertiliser

BAA confirms it is halting work on planning application for third runway at Heathrow and withdrawing application for Stansted runway

New economic analysis reinforces call for third runway plans to be grounded

Court case expected to argue that the government failed to adequately consider carbon impact when approving third runway