Pollution

New standards will lower the legal limit of the smog-causing pollutant from 75ppb to 70ppb

New assessment from European Commission reveals that 'no significant progress' has been made towards halting biodiversity loss by 2020

Carmaker suspends sale of around 4,000 vehicles that may be fitted with "defeat device" as doubt over validity of emissions tests spirals

Personal air quality monitor uses ambient energy from wifi and mobile networks to track pollution data

A raft of new technologies promise to clean up cities' pollution problems - but can they offer a viable alternative to diesel?

Fourteen people arrested during dawn raids as part of investigation into a suspected landfill tax fraud

Volkswagen faces $18bn in fines after US regulators found thousands of cars giving false data on emissions

New standards seek to slash emissions from the capital's construction sites by half by 2020

UK capital wrestles dubious honour of being Europe's most gridlocked city from Brussels

Swan-like water pollution monitors glide across lakes in Singapore tracking water pollution levels