Urban historian and photographer Steve Duncan climbs down manholes to explore the subterranean world of sewers, tunnels and buried natural streams. In subterranean New York City, a place usually associated with muck and stench, he finds a stunning, otherworldly environment, a reminder that a massive technological edifice sits directly beneath our cities. Duncan returns to the surface with images that reveal the history and complexity of the city, but you can tell it’s the experience he values most. ‘You feel like the last man on earth down there,’ he says, ‘and that’s incredibly rare in New York.’
Director: Jon Kasbe
Producers: Laura Ruel, Chad Stevens
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Medicine
Drinking wine from toxic cups was the 17th century’s own dubious ‘detox’ treatment
11 minutes
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Engineering
How water-based clocks revolutionised the way we measure time
10 minutes
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Economics
A tour of New York’s gaudiest neighbourhood with the Marxist geographer David Harvey
13 minutes
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Engineering
Building a prosperous future demands bold ideas. These are some of the boldest
40 minutes
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Environmental history
In Kazakhstan, ‘atomic lakes’ still scar the landscape decades after Soviet nuclear tests
13 minutes
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Architecture
A 3D rendering of the Colosseum captures its architectural genius and symbolic power
17 minutes
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Making
On the Norwegian coast, a tree is transformed into a boat the old-fashioned way
6 minutes
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Engineering
Can monumental ‘ice stupas’ help remote Himalayan villages survive?
15 minutes
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History of technology
Curious singles and tech sceptics – what ‘computer dating’ looked like in 1966
6 minutes