James Sidener

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Viewpoint: Challenger and the misunderstanding of risk

<b>In the past week, the 30th anniversary of the Challenger shuttle disaster has been marked with tributes for the sacrifice of the crew. In the investigation that came after the tragedy, the brilliant physicist Richard Feynman identified a culture at Nasa where risk was not understood, writes</b> …

Richard Feynman

China posts hundreds of never-before-seen HD color photos of the moon

In a previously unseen act of information generosity, China has shared hundreds of photos taken by its Chang’e-3 lunar rover – leaving the world …

NASA's Curiosity Mars rover is snapping pictures of something unlike anything it has encountered before

In December, the rover reached a new territory called Bagnold Dunes, which is rich with one of Mars' most iconic landscapes: dunes.<p>The Bagnold Dunes are on the northwestern flank of Mount Sharp, a mountain at the center of Gale Crater.<p>Now, the rover is scooping up samples of the grains and offering …

Mars Rover

Long-Range Iris Scanning Is Here

An engineering professor at Carnegie Mellon says he’s invented technology that can identify someone from across the room with the precision of a fingerprint.<p>An officer pulls someone over on the side of the highway. The cop sits in the car a moment, runs the plates—they’re fine—and gets out of the …

Carnegie Mellon University

Xiaomi's 49-inch Android TV boasts 4K for just $640

The Mi Pad wasn't Xiaomi's only announcement today. Following the Chinese company's first smart TV from last September, today it has unveiled a slightly larger model with a nice surprise: 4K for just CN¥3,999 or about $640! Like its affordable predecessor, this 49-inch TV comes with built-in …