Scientists create first computer simulation of a complete organism

Scientists create first computer simulation of a complete organismEveryone, meet Mycoplasma genitalium, the subject of many scientific papers, even more vists to the clinic and now the first organism to be entirely recreated in binary. Computer models are often used for simplicity, or when studying the real thing just ain’t viable, but most look at an isolated process. Stanford researchers wanted to break with tradition and selected one of the simplest organisms around, M. genitalium, to be their test subject. They collated data from over 900 publications to account for everything going on inside the bacterial cell. But it wasn’t just a case of running a model of each cellular process. They had to account for all the interactions that go on — basically, a hell of a lot of math. The team managed to recreate cell division using the model, although a single pass took almost 10 hours with MATLAB software running on a 128-core Linux cluster. The representation was so accurate it predicted what M. genitalium looks like, just from the genetic data. And, despite the raft of research already conducted on the bacterium, the model revealed previously undiscovered inconsistencies in individual cell cycles. Such simulations could be used in the future to better understand the complicated biology of diseases like cancer and Alzheimer’s. Looks like we’re going to need more cores in that cluster. If you’d like to hear Stanford researcher Markus Covert’s view on the work, we’ve embedded some footage beyond the fold.

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Scientists create first computer simulation of a complete organism originally appeared on Engadget on Tue, 24 Jul 2012 09:41:00 EDT. Please see our terms for use of feeds.

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Sally Ride, first American woman in space, dies at 61 (updated)

Sally Ride, first American woman in space, dies at 61

It’s a sad day for space travel. Sally Ride, the first American woman to ever travel to space, has died at the age of 61 after a bout with pancreatic cancer. She’s best known for breaking NASA’s gender barrier by flying on Space Shuttle Challenger on June 18th, 1983, but she spent much more of her time guiding our future in space while here on Earth — she founded NASA’s Office of Exploration and directed its early strategy, and she later went on to lead the California Space Institute as well as teach physics at the University of California in San Diego. Her final decade saw her establish Sally Ride Science to encourage students wanting to follow in her footsteps, especially girls. Ride blazed one of the brighter trails in technology, and she’ll be missed.

Update: Ride is survived by her same-sex partner of 27 years, Dr. Tam O’Shaughnessy.

[Image credit: National Archives]

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Sally Ride, first American woman in space, dies at 61 (updated) originally appeared on Engadget on Mon, 23 Jul 2012 18:01:00 EDT. Please see our terms for use of feeds.

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Ubiquitous nanotubes could reboot Edison-era nickel-iron battery technology

nanotubes-edison-nickel-iron-batteryBack in the 1920s, Thomas Edison’s dream of an electric automobile was ultimately foiled by those meddling petroleum engines. But thanks to nanotube research from Stanford University, one legacy from that era may regain some glory: nickel-iron batteries. It turns out that carbon nanotubes doped with nickel and iron crystals can top up the normally slow-charging cells in a matter of minutes — according to the scientists, that’s almost 1,000 times faster than in the past. Although the batteries couldn’t power your Volt or Prius due to a lack of energy density, they could give an extra jolt to their lithium-ion siblings for quicker starts and regenerative braking. The researchers are working on improving stability to allow more charging cycles, but it might be an extra in-your-face for Edison if it pans out.

Ubiquitous nanotubes could reboot Edison-era nickel-iron battery technology originally appeared on Engadget on Thu, 28 Jun 2012 02:51:00 EDT. Please see our terms for use of feeds.

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