How the zebra came by his stripes. "Why zebras evolved their characteristic black-and-white stripes has been the subject of decades of debate among scientists.
Now researchers from Hungary and Sweden claim to have solved the mystery."
posted by estherhaza
on Feb 9, 2012 -
35 comments
Woman, 83, Has World’s First Lower Jaw Replacement – In 3D [abc.com] In what has been called the first operation of its kind, an 83-year-old woman in the Netherlands has been fitted with a custom-made artificial jaw that was created by a 3D printer.
The titanium implant, which weighs less than 4 ounces, was created by taking a CT scan of the woman’s lower jaw and duplicating it with a 3D printer that lays down titanium powder instead of ink. The printer followed the pattern of the woman’s jaw bone layer by layer, fusing the titanium powder in place with heat. In just a couple hours, the 3D replica was ready.
posted by Fizz
on Feb 7, 2012 -
43 comments
PhyloPic is an open database of life form silhouettes. All images are available for reuse under a Public Domain or Creative Commons license.
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posted by brundlefly
on Feb 4, 2012 -
20 comments
"I'm banned," he says. "By whom?" I ask. "My landlord," he says. "And the Swedish Radiation Safety Authority." Jon Ronson on
DIY science.
posted by fearfulsymmetry
on Feb 4, 2012 -
33 comments
"I would point out to you that medical explanations are modern. That Americans today want medical explanations for things that in the 19th century would have been explained by hysteria, and in the 18th century would have been explained by religious conversion experiences in the context of the Great Awakening, when people were having these types of fits, and in the 17th century by witchcraft."
posted by empath
on Jan 30, 2012 -
54 comments
"Speaking for many scientists and engineers who have looked carefully and independently at the science of climate, we have a message to any candidate for public office: There is no compelling scientific argument for drastic action to "decarbonize" the world's economy. Even if one accepts the inflated climate forecasts of the IPCC, aggressive greenhouse-gas control policies are not justified economically." Link.
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posted by BobbyVan
on Jan 27, 2012 -
264 comments
Theory of the Origin, Evolution, and Nature of Life, in which the author, Erik Andrulis, proposes an "axiomatic, experimentally testable, empirically consistent, heuristic, and unified theory of life." He also claims to be able to unify physics.....ahem. All this is done using the chemistry notation you learned in highschool.
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posted by AElfwine Evenstar
on Jan 27, 2012 -
53 comments
"The observers of this unusual visual stimulus reported seeing the borders between the stripes gradually disappear, and the colors seem to flood into each other. Amazingly, the image seemed to override their eyes' opponency mechanism, and they said they perceived colors they'd never seen before."
posted by Slap*Happy
on Jan 23, 2012 -
30 comments
Day at Night was an interview series on the public television station of the City University of New York that aired from 1973-4. CUNY TV is in the process of digitizing and uploading the 130 episodes that were produced, with 46 done so far. The episodes are just under half an hour in length. Among the people interviewed by host James Day are author
Ray Bradbury, actress
Myrna Loy, medical researcher
Jonas Salk, singer
Cab Calloway, writer
Christopher Isherwood, nuclear scientist
Edward Teller, comedian
Victor Borge, tennis player
Billie Jean King, linguist and activist
Noam Chomsky, composer
Aaron Copland, actor
Vincent Price and boxer
Muhammad Ali.
posted by Kattullus
on Jan 16, 2012 -
6 comments
Professor Brian Cox (previously 1 2) goes unplugged in a specially recorded programme from the lecture theatre of the Royal Institution of Great Britain. In his own inimitable style, Brian takes an audience of famous faces, scientists and members of the public on a journey through some of the most challenging concepts in physics.
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posted by lazaruslong
on Jan 14, 2012 -
40 comments
Falling STAR*D?: It is common practice for psychiatrists to switch depressive patients between different antidepressants if their current drug does not evince a symptomatic response. Despite clinical wisdom supporting this, little empirical, controlled evidence exists to direct “switching” protocols (e.g. if a patient with Z characteristics is on drug X, is it usually better to switch to drug A, B, or C? Will switching help at all?) in the psychopharmacological treatment of depression. The NIMH-funded
STAR*D (Sequenced Alternatives to Relieve Depression) study aimed to address these questions of treatment direction in a very large (n>4000), “real-world” sample using a
multi-phase treatment plan with different drugs (and cognitive therapy) at every step to maximize chances of eventual remission. Overall, the NIMH reported that about
67% of patients eventually achieved remission,
with few differences in effectiveness between different types of treatment at each step. However, researchers and commentators have
raised concerns regarding inconsistent reporting of outcomes, after-the-fact changes in
study design and analysis, and other issues that may have inflated, partially invalidated, or misrepresented widely reported treatment outcomes. These inequities may also have implications for the secondary moderator analyses (i.e. does trait A predict switching to X or Y is better?) that were a major reason for the study.
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posted by Keter
on Jan 14, 2012 -
12 comments
Out-of-body experience: Master of illusion:
Out-of-body experiences are just part of Ehrsson's repertoire. He has convinced people that they have swapped bodies with another person, gained a third arm, shrunk to the size of a doll or grown to giant proportions.
[ . . . ]
But Ehrsson's unorthodox apparatus amount to more than cheap trickery. They are part of his quest to understand how people come to experience a sense of self, located within their own bodies. The feeling of body ownership is so ingrained that few people ever think about it — and those scientists and philosophers who do have assumed that it was unassailable.
[ . . . ]
Ehrsson's work also intrigues neuroscientists and philosophers because it turns a slippery, metaphysical construct — the self — into something that scientists can dissect.
posted by troll
on Jan 3, 2012 -
23 comments
The Fat Trap (NYT pop review): Overweight individuals in Western nations (
and, increasingly, beyond) face interpersonal and
institutional stigma for their bodies*. Oftentimes, these stigmas are predicated on the belief that being overweight is a
moral failure, that being overweight is usually a result of laziness, decadence, and/or characterlogical poor impulse control. However, an emerging consensus among obesity researchers points toward
strong, common physiological and individual genetic factors as causative for heightened BMIs in the modern world and the general failure of dieting to produce BMI outcomes.
A recent study in the New England Journal of Medicine (paywalled) adds to this body of evidence, suggesting that chemical messengers held to contribute to altered "efficient" metabolism and increased hunger in the wake of low-calorie dieting are (on average) significantly elevated up to a full year (if not longer) following a substantial drop in weight from dieting.
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posted by Keter
on Dec 28, 2011 -
173 comments
