At an event at Tate Modern, Sadiq Khan pledged to clean up London's act.
The latest figures on the progress EU nations are making towards reducing their use of non-renewable energy show the UK scraping in near the bottom of the class.
A new dual-role system for our nuclear deterrent could save money and remove all nuclear weapons from Scotland in the process.
A major new study of geoengineering techniques finds them an unrealistic distraction from more immediate action to tackle climate change.
Whispers of our nuclear deterrent relocating from Scotland to Wales could be a clever move by the Tories.
94 percent of our peat bogs have been destroyed. Saving them is a vital step in securing our planet's future.
With billions being spent on nuclear weapons, the A&E crisis is one of the government’s choosing.
Ed Miliband hints he could water down his stance on Trident in order to make a deal with the Scottish National Party.
The final vote on Trident replacement is due in 2016: for a government committed to paying down the deficit, a decision not to spend over £100bn on nuclear weapons has got to be a runner.
Labour’s amendments to the Infrastructure Bill would overhaul the existing framework and give us a regulatory regime that is fit for purpose.
The Zombie PM