A picture tells you the past and present life of the fog city London environment theme ppt template

London is known as a foggy city. In 1952, the "London Fog Event of London" even killed 12,000 people. Nowadays, London has less than 10 days of foggy days. What story has London experienced? A picture tells you the past and present life of "Fog City" London, and a picture tells you the past and present life environment theme ppt template of London.