News
Fog in London forces flight cancellations
10 years agoPedestrians walk through fog as they cross the Millennium Bridge, backdropped by St Paul's Cathedral, in London on January 23, 2017. / AFP PHOTO / Daniel LEAL-OLIVAS
A thick fog in London forced the cancellation of around 100 flights at Heathrow Airport on Monday and revived concern about air quality in the capital.