John Metcalfe

Take a San Francisco Gentrification Quiz from 1985

Signs that your neighborhood has become upscale: computer stores, needlepoint boutiques... exotic-bird shops?

Help Science Identify a Kajillion Astronaut Photos of Cities

"Night Cities" is an ambitious project to create an atlas of urban space photography.

Forget Vertical Farms, This Is a Vertical Rice Paddy/Fish Nursery/Transit Center/Nuclear Plant

No sustainable detail is left out of this proposed Hong Kong skyscraper.

How Trash-Covered Beaches End Up Costing Everyone Money

In California, washed-up coastal garbage is having a big economic impact for Orange County, says a new report.

Brooklyn Wins New York's (Literal) Rat Race

MIT visualizes how the city is swarming with rodent-based complaints.

Pre-Ground Coffee Can Contain Corn, Soybeans, Twigs, Dirt

That's the unappetizing news from researchers analyzing java's chemistry.

Tonight's Perseid Meteor Shower Should Be Visible in Even the Most Light-Polluted Cities

The best shower of the year is known for its intense, colorful "fireballs."

Baltimore Gets a Giant Bus Stop Shaped Like the Word 'Bus'

But how do you get to the top part of the big B?

This Is Supposedly the Urban Bike of the Future

If trends continue, we'll all soon be riding extremely well-designed mopeds.

The Hardest Video Game in History Is About Street Art

To thoroughly win, you'll need to actually go visit every continent. 

Cigarette Butts: Fodder for the Future's Green Tech?

Korean researchers may have uncovered an innovative use for tar-stained filters.

The Drought-Ravaged West Sprouts a Massive Pyrocumulus

This stunning cloud was caused by updrafts from wildfires.

Too Lazy to Unlock Your Phone? Try This 'Digital Tattoo'

Press your phone against this creepy skin patch instead of fumbling with that pesky code.

City Maps Made by Judgmental Jerks

These fearlessly biased maps point out areas of "religious wackadoodles," "white guilt," and "Kardashian watchers."

This App Generates Hidden-Message Orbs Your Friends Must Physically Locate

Designed by brain scientists, "Traces" seeks to make messaging more meaningful.

Craft Beer Drinkers: Be Wary of 'Exploding Swill'

"One piece of glass flew into someone's open mouth," reports a man attacked by beer.

The Bay Area's Worst Bike Ride Is Also Its Best

This ride's for you (if you like hulking seafaring machines and a Superfund site).

Gelatinous Sea Creatures Storm San Francisco

Squishy, intergalactic-looking "hydroid polyps" have washed up on beaches by the thousands.

Crowdsourcing Lightning Strikes Actually Works Pretty Well

A Dusseldorf-based network has linked more than 800 low-priced lightning detectors around the globe.