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The Future of Cities According to TechCrunch Disrupt

Three of the finalists in this week's startup contest offer city-themed innovations.

How Quickly Would This $32,000 Bike Get Stolen?

Very, is our guess.

Minimizing the Urban Heat Island Effect Could Reduce Rainfall

White roofs help bring down the heat, but researchers worry they could also stop the rain.

Walmart and the Climate of Hatred

A recent study connecting the presence of Walmarts with hate groups makes a number of problematic logical leaps.

The New Narrowest House in the World

At its widest point, the Keret House in Warsaw is little more than 4 feet across.

Intimate Scenes on the Streets of Quito

The capital of Ecuador has one of the best-preserved city centers in Latin America.

Ideas for Cramming 1 Million More People Into New York City

The city's population is expected to mushroom to 9.1 million by 2030. Here's a novel way to accommodate that growth.

What Chicago Can Expect From a Long Teachers' Strike

During a 19-day strike in 1987, teachers eventually set up temporary classrooms.

The World Trade Center's Rocky Real Estate History

The original Twin Towers had trouble finding tenants, but the new buildings are off to a promising start.

How Sports Teams Are Making Cities Greener

Leagues are taking an impressive range of innovative and cost-effective steps toward sustainability.

Flexibility Is Key in Retrofitting Suburbs

Designing adaptability will help suburban areas meet residents' needs over the long term.

The Legal Activities Banned in London

More than 400 zones in Britain's dominant city have extra rules. Disobeying them can get you a ticket.

New York State's Curious, Century-Old Law Requiring Every City and Town to Have a Historian

Is this still a good idea?

Watch Your Camera Around San Francisco's Thieving Seagulls

Guarding your belongings is hard to do when the thief is one foot tall and can fly.

Denial of the Day: Rahm Emanuel Does Not Like Nickelback

350,000 students got the day off; the mayor clarified his taste in music.

Iowa Mayor Cleans Filthy Commode Himself After Complaints

Ready for a feel-good edition of our weekly restroom column?

Road Noise: Deadly? Maybe. Annoying? Definitely.

A large share of urban dwellers live in areas where road noise is highly irritating.

Bird House? Try a Bird Apartment Building

This swanky avian domicile can fit up to 78 finch families and one human voyeur.

Chicago Teachers Strike Puts Charter Schools in the Spotlight

With traditional public schools out of session, will parents make the switch?