The "Radio Time Machine" is an online application that has collected the top 20 Billboard hits back to 1940. Some transcend their time period, while the appeal of others may be harder to understand. Host Scott Simon speaks with Brett Westervelt, a grad student at Stanford University and the designer of the app.
Early investors like investment banks and venture capitalists already own shares of Facebook. Some are even starting to sell. Now small investors get their chance to buy with Friday's IPO. NPR's Sonari Glinton checks in with a few of them on the first day of trading.
Investors snapped up Facebook shares on a much hyped and tumultuous first day of trading. Mark Zuckerberg got it all started by ringing the opening bell for Nasdaq. Then a glitch delayed trading by half an hour. The IPO put Facebook's market value at over $100 billion — more than McDonald's or Amazon.
A TED Talk challenging conventional wisdom that rich entrepreneurs are the number one job creators is now available for public viewing, after TED organizers originally kept the video private because it was too "explicitly partisan."
SpaceX is set to launch its Dragon spacecraft to rendezvous with the International Space Station this weekend. If successful, it will be the first commercially developed, launched and operated craft to meet the ISS. SpaceX head Elon Musk talks about the launch, and his other project, Tesla Motors.
Reporting in Nature, researchers write that two individuals, both paralyzed by stroke, made reach-and-grasp movements using a thought-controlled robotic arm. One participant was even able to a sip a drink by herself. Neuroengineer Dr. Leigh Hochberg discusses the paper and the ongoing trial.
Facebook begins public trading Friday at $38 a share. The social networking company boasts 900 million users, giving it undeniable clout in the marketplace. Whether Facebook can generate enough profit to justify its valuation is another matter.
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