Meredith Reba, Femke Reitsma and Karen C. Seto compiled a dataset of urban settlements between 3700 BC and AD 2000. It’s the first of its kind, and while not comprehensive, it does provide a view into growth around the world. Max Galka put together the straightforward map above to display the data.
Growth of cities, going back 6,000 years
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Air Quality Mapped Over Time
With wildfires burning in the western United States, smoke fills the air. This is an animation of the air quality during the past couple of months.
A Day in the Life: Work and Home
I simulated a day for employed Americans to see when and where they work.