Five years ago, Twitter was hardly a blip on the political radar. Now, it's a social media giant. President Obama recently urged college student to take to Twitter and pressure their representatives on student loan interest rates. Host Michel Martin discusses the role of Twitter in politics with NPR's Don Gonyea and SocialFlow's Frank Speiser.
Beijing is cracking down on social media following a dissident's escape, apparently to U.S. protection. Its response is markedly different from its handling of the scandalous downfall of once-powerful politician Bo Xilai, when rumors were allowed to fly.
A private company has unveiled plans to mine precious metals and water from nearby asteroids. Planetary Resources co-founder Eric Anderson discusses the various stages of the mining process and how the excavated minerals could impact future space exploration and innovation on Earth.
In The Idea Factory: Bell Labs and the Great Age of American Innovation, Jon Gertner writes of the legendary innovations developed at AT&T's Bell Labs, from lasers and transistors to solar cells and cell phones, and discusses how the lab became a hotbed for new ideas.
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