Category: Data stories
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Britain’s earthquakes since 1382: the big ones, the coalfield quakes and the biggest near you

I mapped all 7,032 earthquakes in the British Geological Survey’s catalogues since 1382. Britain has a magnitude 4 about every 3 years, and its busiest modern earthquake zones were coalfields.
Tristan Hotham
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The lido boom and bust: how Britain built, closed and saved its open-air pools

In the 1930s Britain built lidos; from the 1970s it closed them; since 2000 some have come back. I built an open register of 73 lidos: 33 of 49 dated openings came in the 1930s, and 14 closed pools have reopened.
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Did the Pits Closing Still Show?

196 deep mines were working in Britain at the start of 1984, and 167 had closed by 1994. Forty years on, the pit towns of England and Wales have 2.0 points more adults long-term sick than similar towns, whenever their pit closed.
Tristan Hotham
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Bombs on Britain: where the air raids killed

I counted all 61,542 civilians on the Commonwealth War Graves Commission’s Second World War roll for the UK, town by town. 51% of them died outside London, and the story starts with the shelling of Hartlepool in 1914.
Tristan Hotham
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Where are Britain’s oldest trees?

I mapped the 1,626 notable trees on OpenStreetMap. Oaks dominate, yews hug the old churches, a few giants stand in the old royal forests, and the map shows the mappers as much as the trees.
Tristan Hotham
