Guardian: The supreme court could force the government to take steps to urgently reduce dangerous air pollution in many British cities to meet European limits, following a landmark hearing this week.
The case, to be heard by five law lords, coincides with government warnings that toxic air pollution has been at "high" levels across much of England and Wales this week, including London, York, Manchester, Liverpool, Swansea, Bristol and other cities.
ClientEarth, a group of campaigning lawyers that has...