The Huge Mist Cannons That Keep the Air Clean in NYC's New Tunnels

The Huge Mist Cannons That Keep the Air Clean in NYC's New Tunnels

We’ve followed the $10.8 billion East Side Access project, which will extend the Long Island Railroad from Queens to Grand Central, all year. But now that the tunnels have been blasted, new machines are arriving—and they’re just as cool as the tunnel borers.

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The College Kid Who Built a Secret Tunnel Underneath the Berlin Wall

The College Kid Who Built a Secret Tunnel Underneath the Berlin Wall

At its peak, the Berlin Wall was 100 miles long. Today only about a mile is left standing. Compared with other famous walls in history, this wall had a pretty short life span.

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How the Persian Gulf Is Quietly Building a Railroad Empire

How the Persian Gulf Is Quietly Building a Railroad Empire

Here in the U.S., the arrival of a new tunnel boring machine is huge news, warranting naming ceremonies and Twitter accounts. Meanwhile, in Doha, officials have quietly signed a contract to buy fifteen boring machines to build a sprawling new subway system. And that’s nothing compared to the massive transit network being built to connect the rest of the Gulf states.

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This Giant Mechanical Earthworm Is Fixing D.C.'s Poop Problem

This Giant Mechanical Earthworm Is Fixing D.C.'s Poop Problem

Washington D.C. is overflowing with crap—and not just the sort spewed in Congress. Rather, its ancient sewage system regularly overflows, sending a literal river of poo into the city’s waterways. Lady Bird is the name of the giant tunneling machine sent to stop it.

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London’s Newest Farm Is an Abandoned Bomb Shelter Deep Beneath the City

London's Newest Farm Is an Abandoned Bomb Shelter Deep Beneath the City

What do you do with a bomb shelter when you’re no longer getting Blitzed by the Nazis? For decades, Londoners have searched for ways to make use of old bomb shelters lurking deep underground. They’ve become data centers, dusty storage rooms, and, now, the first underground urban farm—thanks to a couple of foodie entrepreneurs and a Michelin-star chef.

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8 Massive Tunnels Being Built Right Now Under A City Near You

8 Massive Tunnels Being Built Right Now Under A City Near You

Now that we know it was an eight-inch steel pipe that brought the world’s largest-diameter tunneling machine to a halt up in Seattle, we can no longer fantasize about Bertha unearthing a five-story-tall buried locomotive. But we can look at something almost as fascinating: The other giant holes that are currently being churned through the bedrock below our cities.

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Meet Mom Chung, The Massive Machine Digging Tunnels Under San Francisco

Meet Mom Chung, The Massive Machine Digging Tunnels Under San Francisco

Deep beneath the streets of San Francisco, Mom Chung is making her move. In July, the massive tunnel boring machine (TBM) started construction on the Central Subway, the city’s brand-spanking new subterranean transit line (ETA 2019).

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Driving is slowly killing us, a freeway expansion uncovers geological treasures, Londoners protest t

Driving is slowly killing us, a freeway expansion uncovers geological treasures, Londoners protest the city’s poor cycling conditions, what dive bar bathrooms can tell us about our neighborhood, and a quick look at San Francisco’s real underground (not BART). All in this week’s urban reads.

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You Could Be the Proud Owner of These 19th-Century British Tunnels

You Could Be the Proud Owner of These 19th-Century British Tunnels

Sure, this 2,000 square-foot, no-windows, no-view property is a bit of a fixer-upper. But think of the Halloween parties you could throw down here! This set of 200-year old tunnels beneath the British port city of Plymouth are going up for auction next month for the low-low price of $30,590.

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27 More Things Hiding In New York City’s Secret Tunnels

27 More Things Hiding In New York City's Secret Tunnels

In honor of the rediscovery of New York City’s long-lost cow tunnels, we asked you to photoshop up some other goodies that might be hiding right beneath our feet. A lot of them involved poop.

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