The Indian national carrier has saved £6.25m in six months through a concerted effort to cut fuel use

£80m Telehouse West project will offset carbon by providing heat to local homes and businesses

Trials of 10,000 units in ten countries will be used to develop an application for carbon credits

Mayor reportedly fuming over prime minister's premature announcement

Soaring costs of offshore wind installation and lack of credit drives developers to European bank

Greenpeace and WWF-UK among campaigners launching challenge that could see decision on third runway quashed

Alistair Darling will flesh out plans for electric vehicle trials in the Budget later this month

Multibillion-dollar investment fund to adhere to new ethical investment criteria

Motor industry urges government to support plans for £2,000 incentive to swap polluting older models for newer, greener cars