Cold, still weather in London prompted the mayor to issue a “very high” air pollution alert for the first time Monday, while thick freezing fog caused numerous flight delays and cancellations at London Heathrow and other area airports.
Associated Press, Washington Post: World
Mon, 01/23/2017 - 9:48am
Cold, still weather in London prompted the mayor to issue a “very high” air pollution alert for the first time Monday, while thick freezing fog caused numerous flight delays and cancellations at London Heathrow and other area airports.