By Soulskill from
Slashdot's or-as-frankie-calls-it,-february department:
An anonymous reader writes
"A biotech start-up from Massachusetts has an unusual product: a bottle full of bacteria you're supposed to spray onto your face. The bacteria is Nitrosomonas eutropha, and it's generally harmless. Its main use is that it oxidizes ammonia, and the start-up's researchers suspect it used to commonly live on human skin before we began washing it away with soaps and other cleaners. Such bacteria are an area of heavy research in biology right now. Scientists know that the gut microbiome is important to proper digestion, and they're trying to figure out if an external microbiome can be similarly beneficial to skin. A journalist for the NY Times volunteered to test the product, which involved four straight weeks of no showers, no soap, no shampoo, and no deodorant. The sprayed-on bacteria quickly colonized her skin, along with other known types of bacteria — and hundreds of unknown (but apparently harmless) strains. She reported improvements to her skin and complexion, and described how the bacteria worked to curtail (but not eliminate) the body odor caused by not washing. At the end of the experiment, all of the N. eutropha vanished within three showers."Read Replies (0)
By Soulskill from
Slashdot's stirring-the-pot department:
On Monday, The Intercept reported that the NSA is
recording the content of every cell phone call in the Bahamas. At the time of publication, The Intercept said there was another country in which the NSA was doing this, but declined to name it because of "specific, credible concerns that doing so could lead to increased violence." Now, reader Advocatus Diaboli points out that WikiLeaks has spilled the beans:
the country being fully monitored by the NSA is Afghanistan. Julian Assange wrote,
"Such censorship strips a nation of its right to self-determination on a matter which affects its whole population. An ongoing crime of mass espionage is being committed against the victim state and its population. By denying an entire population the knowledge of its own victimization, this act of censorship denies each individual in that country the opportunity to seek an effective remedy, whether in international courts, or elsewhere. Pre-notification to the perpetrating authorities also permits the erasure of evidence which could be used in a successful criminal prosecution, civil claim, or other investigations. ... We do not believe it is the place of media to 'aid and abet' a state in escaping detection and prosecution for a serious crime against a population. Consequently WikiLeaks cannot be complicit in the censorship of victim state X. The country in question is Afghanistan."Read Replies (0)
By samzenpus from
Slashdot's bad-dates department:
An anonymous reader writes with news about a study that investigated the effectiveness of Yelp reviews in pinpointing the source of foodborne illnesses.
"In 2012, New York City's Department of Health and Mental Hygiene (DOHMH) found that residents weren't turning to the city's free 311 service to make such complaints, but rather they were reporting their experiences in Yelp reviews. So the CDC, in collaboration with the New York City DOHMH, Yelp, and Columbia University, conducted a nine-month long research into the effectiveness of using online reviews to identify sources of foodborne illnesses. The study discovered 468 actionable complaints, 97% of which hadn't been officially reported to the city, and analyzed roughly 294,000 Yelp restaurant reviews. Subsequent investigations on suspected restaurants turned up evidence of bare-handed food handling, cross-contamination, or even the presence of mice and cockroaches. The study concluded that providing the public with more options for reporting complaints about restaurants, particularly in the social media sphere, would help in the identification and possible closure of sources of foodborne illnesses."Read Replies (0)
By samzenpus from
Slashdot's you-keep-using-that-word-I-do-not-think-it-means-what-you-think-it-means department:
An anonymous reader writes
"There is certainly no shortage of stories about AI systems that include the saying, 'like the brain'. This article takes a critical look at those claims and just what 'like the brain' means. The conclusion: while not a lie, the catch-phrase isn't very informative and may not mean much given our lack of understanding on how the brain works. From the article: 'Surely these claims can't all be true? After all, the brain is an incredibly complex and specific structure, forged in the relentless pressure of millions of years of evolution to be organized just so. We may have a lot of outstanding questions about how it works, but work a certain way it must. But here's the thing: this "like the brain" label usually isn't a lie — it's just not very informative. There are many ways a system can be like the brain, but only a fraction of these will prove important. We know so much that is true about the brain, but the defining issue in theoretical neuroscience today is, simply put, we don't know what matters when it comes to understanding how the brain computes. The debate is wide open, with plausible guesses about the fundamental unit, ranging from quantum phenomena all the way to regions spanning millimeters of brain tissue.'"Read Replies (0)
By timothy from
Slashdot's honey-i-shrunk-the-gamers department:
When I bumped into Abram Thau at
Metrix Createspace in Seattle's Capitol Hill, he showed me a few printed figurines, including a Storm Trooper (of the Star Wars variety), and I thought at first that he had printed them as duplicates of similar-sized commercial products. Not so: It turns out these are made-from-life, specifically from cos-players who have stood on Abram's human-suitable turntable (powered by a chicken rotisserie motor hooked to a 3-D printed pulley) while he scanned them in. Thau's apartment is practically shouting distance from Metrix, but that pulley was made on a large Deltabot filament printer in the corner of his living room. (A living room usefully cluttered with tools, bottles of resin, projectors in various states of repair, and more printed objects.) More interesting still, Thau's figurines are produced with a home-built resin printer. Resin is messier to work with than the filament feedstock of RepRap/Makerbot style printers (and the resin itself has a slight odor), but it allows different results. Overhanging pieces are possible without requiring elaborate support pieces built into the mesh, and the resulting product can be noticeably smoother than typical filament printing, though all 3-D printing techniques are getting better. Thau didn't buy one of the commercially available resin printers, though (like FormLabs's), but instead decided to build his own out of scavenged and off-the-shelf components. Budget concerns and improvisation rule the day (Thau is also a grad student, studying to be a middle school teacher): That means there's a book holding up the projector which is vital to curing the resin, and the printer's case is recycled from a previous one. The results look as good as the affordable commercial ones I've seen, and he's excited to teach others to make their own. Third-party resin makers and a robust market in used projectors mean that other hobbyists can follow his lead and turn their friends into figurines. (
Alternate video link)
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