Retailers score highly for their progress in areas such as sustainable sourcing, while Tesco, Asda and Netto receive the lowest ratings

Mayor Bertrand Delanoë unveils environmentally friendly Autolib project in latest attempt to reduce Paris traffic

UN's top drylands official says people must be paid via global carbon markets for preserving the soil

Environmental bank could start as a fund owing to fears of adding to deficit, says environment secretary Chris Huhne

Move by Mexican presidency, Europe and Pacific island states to prepare new negotiating text has outraged developing nations

More proactive government policies could generate an extra £546bn of investment in clean energy, report finds

Global industry should be able to remove 17bn tons of emissions by 2020, Virgin chief tells Cancún climate change summit

Plans to make evenings lighter have support from road safety, environmental, tourism and sports groups

PM turns down Mexico's invite to summit where backroom deals show how progress can be made despite low expectations

Redd scheme designed to prevent deforestation but critics call it 'privatisation' of natural resources