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"MythBusters" Drops Kari Byron, Grant Imahara, Tory Belleci 364

rbrandis (735555) writes In a video announcement Thursday on Discovery Channel, MythBusters hosts Adam Savage and Jamie Hyneman revealed that longtime co-hosts and fan favorites Kari Byron, Grant Imahara, and Tory Belleci are no longer on the show. "This next season we're going back to our origins with just Adam and me," Hyneman said in the video, which explained that the change took hold as of the season's last episode on August 21. (Our interview with the original-and-remaining Mythbusters is one of my favorites.)

A Better Way To Make Mind-Controlled Prosthetic Limbs 28

the_newsbeagle writes: To make a brain-machine interface, you need a way to capture neurons' electric signals. The most precise and most invasive way uses implants that are stuck in the gray matter. The least precise and least invasive way uses EEG sensors stuck to the scalp. But researchers at Johns Hopkins University say there's a third way that gets the best of both worlds, which is not too invasive and fairly precise. They use ECoG systems, in which a mesh of electrodes is placed under the skull, draped over the surface of the cortex.

They're testing their systems on epilepsy patients, who have these ECoG systems inserted anyway while they're waiting for surgery (the electrodes record the source of their seizures). The researchers are capturing these patients' movement commands from their brains, and using them to control robotic limbs. Someday such a system could be used by amputees to control their prosthetic limbs.

A Movie of Triton Made From Voyager 2's Fly-by 25 Years Ago 34

schwit1 writes: Using restored images taken by Voyager 2 when it flew past Neptune's moon Triton 25 years ago, scientists have produced a new map and flyby movie of the moon. "The new Triton map has a resolution of 1,970 feet (600 meters) per pixel. The colors have been enhanced to bring out contrast but are a close approximation to Triton's natural colors. Voyager's "eyes" saw in colors slightly different from human eyes, and this map was produced using orange, green and blue filter images. ... Although Triton is a moon of a planet and Pluto is a dwarf planet, Triton serves as a preview of sorts for the upcoming Pluto encounter. Although both bodies originated in the outer solar system, Triton was captured by Neptune and has undergone a radically different thermal history than Pluto. Tidal heating has likely melted the interior of Triton, producing the volcanoes, fractures and other geological features that Voyager saw on that bitterly cold, icy surface. Pluto is unlikely to be a copy of Triton, but some of the same types of features may be present." Dr. Paul Schenk provides provides further information on his blog, and the movie can be viewed here.

Researchers Made a Fake Social Network To Infiltrate China's Internet Censors 49

Jason Koebler writes: In order to get inside China's notorious internet filter, Harvard researcher Gary King created his own fake social network to gain access to the programs used to censor content, so he could reverse-engineer the system. "From inside China, we created our own social media website, purchased a URL, rented server space, contracted with one of the most popular software platforms in China used to create these sites, submitted, automatically reviewed, posted, and censored our own submissions," King wrote in a study published in Science. "We had complete access to the software; we were even able to get their recommendations on how to conduct censorship on our own site in compliance with government standards."

Scientists Confirm Life Under Antarctic Ice 46

MikeChino writes A new paper by a group of researchers from Montana State University confirms that life can survive under antarctic ice. Researchers led by John Priscu drilled down into the West Antarctic Ice Sheet and pulled up organisms called Archaea. These organisms survive by converting methane into energy, enabling them to survive where there is no wind or sunlight, buried deep under the ice.