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Reuters Why is the Israeli mobile GPS startup drawing acquisition prices as high as Instagram and Tumblr?
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Photos
Countdown To the Last Steam Train
These beloved but antiquated locomotives are disappearing from western China.
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Maps
Mapping the Potential for Solar Power On Every Roof
Nearly every square meter of rooftop in Cambridge, Massachusetts, has now been evaluated for its suitability to host solar panels.
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Charts
The Future of Mapping Carbon Emissions, With Pinpoint Precision
A new modeling system called "Hestia" traces greenhouse gases to individual urban buildings and roads.
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The Big Fix
The Developing World's Most Innovative City for Trash Management Is ... Bangalore?
The Indian city is setting itself up as a model for how struggling cities can better handle waste disposal.
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The Bike Helmet That Screams For Help in an Accident
This crash detector will send GPS coordinates to the authorities if you sustain a severe head impact.
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Recycling Innovation of the Day: Blasting Concrete With Lightning
Who says recycling can't be fun?
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Videos
A Water-Spewing Swing Set to Delight and Frighten Children
This hacked "Waterfall Swing" puts kids through dozens of rainstorms each minute.
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Maps
Mapping New York's Hottest Jogging Routes
Using GPS technology implanted in shoes, artists envision the paths that runners love to tackle.
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Maps
Watch a City Aglow in Greenhouse Gas Emissions
Researchers at Arizona State University have created software that tracks carbon dioxide emissions of whole cities, down to individual buildings and roadways.
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Street Cleaning: The Video Game
Get behind the driver's seat to experience the exciting world of street sweeping firsthand.
