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Without a radically expanded and smarter electrical grid, wind and solar will remain niche power sources.
Dan Kaminsky discovered a fundamental problem and got people to care in time. We were lucky this time.
With catalysts created by an MIT chemist, sunlight can turn water into hydrogen. If the process can scale up, it could make solar power a dominant source of energy.
An Indian startup thinks that the right software can make cheap phones a financial lifeline to hundreds of millions.
The social-networking strategy that took an obscure senator to the doors of the White House.
Austan Goolsbee is a new breed of economic advisor for a new kind of presidential candidate.
We profile some of the most innovative ideas of the Social Web.
Web 2.0–the dream of the user-built, user-centered, user-run Internet–has delivered on just about every promise except profit. Will its most prominent example, social networking, ever make any money?
The social network’s technology manages a vast and rapidly expanding web of connections for its millions of users.