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The No-Money-Down Solar Plan

A new wave of start-ups wants to install rooftop solar panels on your house. Upfront cost: nothing

By Christopher Mims

Ocean Overhaul

Marine zoning is a bold remedy for sick seas

By Sarah Simpson

The Omnipotence Machines

Tiny, ubiquitous sensors will allow us to index the physical world the way the Web maps cyberspace

By Gregory Mone

Pocket Translator

The military, short on linguists, is building smart phone–based devices to do the job

By Gregory Mone


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December 2009

See the World from a Different Perspective

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