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Why, when it's very likely they have a smartphone with a better camera, do people use tablets to take photos and videos? "I think people look a little silly doing it but I can understand why," said Amit Gupta, founder of Photojojo.com. "It's like the world's biggest viewfinder." Traditional cameras have small viewfinders that, when you put your eye to them, fill your entire view with a scene. Smartphone screens are dinky in comparison. Someone who struggles to see a phone screen, especially when holding the device in outstretched arms, may enjoy the extra real estate of a tablet.

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"Everyone who bought a macbook pro spent a huge premium... and did not expect to have a manufacturing defect," the petition says. Mike Calahan, a writer from Los Gatos, Calif., said he and his wife spent $2000 on their MacBook in February 2012, only to have it freeze with increasing frequency over the past few months.

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Andrew Conrad, head of Google (GOOG) Life Sciences division, said it would be to the body what an oil change is to a car. "Can you imagine changing your oil when the engine is broken?" said Conrad, who made the announcement at the Wall Street Journal Digital conference. Conrad said it's time for healthcare to become more proactive than reactive.

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No one quite knows why email has stuck around for so long, but it’s probably because it’s so simple and completely platform agnostic; you can send an email from your laptop or smartphone or car or refrigerator to any other internet-connected device. Try that with Apple iMessage or Google Hangouts.

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Asking a team of journalists to rally around a science fiction movie might sound ludicrous. Yet some combination of boundless vision, relaxing of natural laws, and enthralling story can prompt even the most disciplined Popular Science employee to daydream at his or her desk. To us, science fiction is a lens through which we can explore our place and future in the universe.

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