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txchnologist:

The Chance To Dance Again

by Michael Keller

We highlighted the TED talk of Hugh Herr a couple of weeks ago. But his work is too important and beautiful to leave to just one post.

The MIT associate professor of media arts and sciences is making prosthetic limbs and exoskeletons that restore function in those who have lost legs from injury or disease. This set of gifs focuses on his team’s BiOM powered ankle and foot prosthesis

"Bionics is not only about making people stronger and faster," he said during the talk. "Our expression, our humanity can be embedded into electromechanics."

To prove his point, Herr and fellow researchers studied dance movement to replace the lower leg that professional dancer Adrianne Haslet-Davis lost after last year’s Boston marathon bombing. He concluded his talk by bringing Haslet-Davis on the stage to perform a bionic rumba. 

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wildcat2030:

How Do Sperm Recognize Eggs? Mechanism Finally Found
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It’s the stuff of 3rd-grade sex ed: sperm meets egg to make baby. But, surprisingly, scientists have actually been in the dark about one crucial step: how the two sex cells recognize each other amidst the fluid frenzy in the Fallopian tubes. Now researchers have announced that they’ve found the missing piece of this fertilization puzzle, and that the discovery could lead to individualized fertility treatments and hormone-free birth control. Back in 2005, researchers found the first half of the the puzzle: a binding protein on the surface of sperm they called Izumol (after a Japanese marriage shrine). In the decade since then, scientists have been searching for Izumol’s counterpart on egg cells. Essentially, they’d found the plug but couldn’t locate the outlet. Today researchers at Cambridge announced they’ve found that outlet: a receptor protein on the surface of the egg cell. They’ve found it on the eggs of pigs, opossums, mice and even humans. (via How Do Sperm Recognize Eggs? Mechanism Finally Found - D-brief | DiscoverMagazine.com)

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