Mayor to face questions from London Assembly after receiving temporary exemption from EU's air quality standards
Support for anaerobic digestion and older generators stepped up as part of changes to Northern Ireland Renewables Obligation
"Use of credits would substitute for appropriate domestic ambition"
Attorneys general urge the Environmental Protection Agency to implement Transport Rule designed to stop pollution crossing state borders
MPs Committee warns Eric Pickles' flagship bill contains no definition of sustainable development, fuelling fears bill will block renewable development
Carbon-intensive firms given until end of September to submit emissions data for 2010
Environmental Services Association says plans to simplify the Carbon Reduction Commitment could jeopardise UK waste targets
ScottishPower Renewables receives planning permission to develop 10MW tidal array in the Islay Sound
New rules would aim to slash Mercury emissions from coal plants by 91 per cent
Janez Potočnik says EU farming subsidies must drive greener practices for policy to remain legitimate