IN CONTEXT

KEY FIGURE

Emma Johnston (1973–)

BEFORE

1272 King Edward I of England bans the burning of sea coal in London because of the smoke it produces.

19th century Coal-burning during Britain’s Industrial Revolution stunts children’s growth and raises death rates from respiratory diseases.

AFTER

1956 The Clean Air Act is introduced in the UK, bringing the thick smogs that plagued its major cities to an end.

1963 The Clean Air Act is passed in the US.

1972 The Clean Water Act is fully ratified in the US.

1984 Toxic gas leaks from the Union Carbide India factory in Bhopal kill thousands and injure many more.

Pollution comes in many forms, ...

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