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NATIONAL HARBOR, Md.--At least three forms of security depend on inventing a future of cheap, clean energy: national, economic and environmental. President Barack Obama launched the Advanced Research Projects Agency for Energy ( ARPA-E ) in 2009 to fund innovative research in the hopes of delivering such technologies

Why we’re still waiting for the perfect mobile interface. Illustration by Robert Samuel Hanson Shortly after the iPhone 4S went on sale this fall, its marquee feature, the Siri voice assistant, sparked a heated debate in the tech world: Was Siri a great computing interface, or was it the greatest?

Kickstarter is asking that a patent be invalidated--or at least, that it not be found to be infringing upon it. Kickstarter, the crowdfunding website that helps advance original ideas, is under attack for being a copycat.

The Advanced Research Projects Agency-Energy (ARPA-E) announced the winners of its latest round of grants yesterday in a telephone conference. The funds will advance research projects geared toward improving energy efficiency, developing alternative fuels, improving electrical infrastructure and reducing U.S. dependence on foreign resources.

Post-revolution Egypt is in a state of flux overlooked by outsiders. New political parties are forming while various factions hustle for power.

Name: Arun Majumdar Title: Director, Advanced Research Projects Agency–Energy [More]

Funding for projects like Data.gov and mobile apps for agencies is in danger of being almost fully slashed. The Obama administration swept into Washington in 2008 with promises of both increased transparency and increased use of modern technologies, two things our political system desperatley needed. And while both promises somewhat fell victim to standard Washington infighting and inertia, some of the results were impressive, especially the high-profile Data.gov , which aggregates all government data sets, and USASpending.gov , where you can see how much money government contracts are worth.

[Moderated by Anya Kamenetz;

The smart grid . Sounds good, right? But what exactly is it