London

12 clean tech start-ups selected for pioneering smart city competition

Email exchanges reveal fierce opposition from auto industry, voicing fears that council could start a 'bidding war' on anti-diesel measures

Mayor claims new project will tackle air pollution as he comes under pressure to expand proposed Ultra Low Emission Zone

The need to decarbonise our economy means the pace of infrastructure development is going to accelerate - we are going to have to get a lot better at project management

EvoEnergy installs one of the highest rooftop arrays at 20 Fenchurch Street

Famous shopping thoroughfare exceeds annual pollution limit just four days into new year, campaigners claim

As Trafalgar Square Christmas Tree is recycled, Mayor Boris calls for business action on food waste and Scotland promotes Resource Efficiency Pledge

Hope that example set by Munich, Seattle, Lima and others will prompt pledges to commit to zero emissions by 2050

Innovative green wall expected to reduce flood risk and boost biodiversity

Homeless charity teams up with First Mile to ensure shelters avoid sending waste to landfill