A thick yellow smog brought the capital to a standstill for four days and killed thousands peopole. Today London’s air appears to be much cleaner today but it stills dengerously polluted. London was often hidden under noxious fog that were called smog there had been smog before but nothing could be compared to that event.

When it happened people couldn’t be able to see almost anything that’s why police used flames to direct the traffic because driving was really dangerous. The had to force bus drivers to walk ahead of their vehicles and trying to guide them thorugh the smog.