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80beats

Archive for the ‘Technology’ Category

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What is Amazon Silk?

What’s the News: Along with a whole passel of new Kindles, Amazon yesterday announced a new browser to accompany them, named Silk. And it’s got some unusual characteristics that have some crowing about the next big thing in mobile browsing and others wondering about privacy implications.

(more…)

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September 29th, 2011 Tags: Amazon, Amazon Silk, browsers, Kindle, Opera, tablets
by Veronique Greenwood in Technology | 2 Comments » | RSS feed | Trackback >

New Gene Sequencing Technique Opens the Doors for Studying Elusive Bacteria

bacteria
If bacteria can’t grow in a Petri dish, sequencing them is difficult.

What’s the News: Want the genome of a bacterium you found in your belly button? Or, for that matter, of a bacterium producing a promising new antibiotic? Well, unless you can get it to thrive in a Petri dish and create a billion sister cells for analysis, you’re out of luck.

But sequencing the genomes of notoriously finicky bacteria, like those on skin, could be on the horizon with a new procedure that bypasses the Petri dish step. Pairing a new algorithm with an earlier technique, scientists from the Venter Institute and their collaborators can now get all that information from a single cell.

(more…)

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September 19th, 2011 Tags: DNA sequencing, genome, J. Craig Venter, microbiome, ocean
by Veronique Greenwood in Health & Medicine, Living World, Technology, Top Posts | 4 Comments » | RSS feed | Trackback >

“Beyond Frugality”: Senate Panel Cuts NSF Budget by $162 Million

Yesterday, the Senate subcommittee that funds the NSF, NASA, and research agencies in the Department of Commerce announced that they could see no way out of startlingly drastic budget cuts.

The National Institute of Standards and Technology, which develops and curates technical standards for science and industry, will see a 10% drop in its budget, and the National Science Foundation, responsible for 20% of the basic research funding in the nation, will lose $162 million, or 2.4% of its budget. Under the plan, which passed 15-1 in the subcommittee, other programs will be wiped completely, like the Technology Innovation Program, which funds high-risk, high-reward research. “We’ve gone beyond frugality and are into austerity. … We didn’t want to do this, but that’s the way the world is,” said an unhappy Senator Barbara Mikulski (D-MD) (via ScienceNOW), who has frequently gone to bat for science funding and heads the subcommittee. Today, the whole Senate Appropriations Committee will vote on the plan—for more news as it develops, head over to Science NOW.

[Disclosure: DISCOVER Magazine is a media partner of the NSF, helping produce public-science programs like Changing Planet.]

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September 15th, 2011 Tags: funding, NIST, NSF, Senate, Senate Appropriations Committee
by Veronique Greenwood in Health & Medicine, Technology | 12 Comments » | RSS feed | Trackback >

Tiny Head-Mounted Microscope Rides Along As Mice Go About Their Business

What’s the News: A new thumbnail-sized microscope will give researchers a way to see what’s happening in the brain of a mouse as it moves around and goes about its business. The microscope, described earlier this week in Nature Methods, weighs less than 2 grams—little enough that it can be fitted atop a rodent’s head—and tracks the activity of up to 200 brain cells.

(more…)

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September 15th, 2011 Tags: animal research, imaging, microscopes, mouse, neuroscience
by Valerie Ross in Mind & Brain, Technology | 1 Comment » | RSS feed | Trackback >

How Human Are You? A New Turing Test Relies on Spatial Relations

cup
Where is the cup? THERE IS NO CUP.

 

What’s the News: Ever since Alan Turing, the father of modern computers, proposed that sufficiently advanced computers could pass as human in a conversation, the classic Turing test has involved what’s essentially instant messaging. Computers designed to imitate human conversational patterns are often entered by their designers in competitions where they aim to fool people in front of a distant monitor into thinking they’re human—and they do a pretty good job, although some human mimics, like chatbots, sound like crazed children on their first spin in cyberspace (“I’m not a robot, I’m a unicorn!“).

But scientists have noticed that humans describe where objects are in space in a specific way, taking into account what spatial relationships would be most useful for a human listener. Artificial intelligences, even fairly sophisticated ones, talk about space differently, and the difference is large enough that it can form the basis of a new type of Turing test, British scientists reported at a conference in April. Now, New Scientist has developed an interactive version of the test, which lets you see for yourself what statements about space set off your silicon-lifeform alarms. So what’s behind it?

(more…)

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September 14th, 2011 Tags: artificial intelligence, spatial relations, Turing Test
by Veronique Greenwood in Mind & Brain, Technology, Top Posts | 7 Comments » | RSS feed | Trackback >

Tumor-Monitoring Implant Could Give Advance Warning of Growth

chip
The blood oxygen-monitoring chip, which is about 2 cm long and encased in plastic, is still in the
early stages of testing.

What’s the News: Scientists in Germany are developing a chip that keeps track of blood oxygen levels for implanting near tumors, reports Kate Baggot at Technology Review. When blood oxygen levels drop, signalling a burst of tumor growth, doctors would be alerted immediately, jump-starting the treatment process.

(more…)

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September 12th, 2011 Tags: cancer, medical implants
by Veronique Greenwood in Health & Medicine, Technology, Top Posts | No Comments » | RSS feed | Trackback >

New Stealth Tech Lets Tanks Blend Into the Infrared Background

Giant pixels pasted onto tanks can now sense the general pattern of infrared energy, or heat, distributed around a bucolic mountain meadow or windy desert and camouflage the vehicle accordingly, so heat-spying eyes will be none the wiser. (more…)

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September 7th, 2011 Tags: cloaking, infrared, military, stealth, tanks
by Veronique Greenwood in Technology | 8 Comments » | RSS feed | Trackback >

Cyborg Beetles’ Neural Implants Could Suck Power From Bugs’ Wing Beats

beetle
These spiral generators scavenge power when the beetle beats its wings.

What’s the News: Building tiny fly-like robots—for spying, search and rescue, and so on—has a long history in robotics. But some researchers, citing the challenge of building agile, dynamic machines at that scale, have turned to Mother Nature instead and made living beetles into cyborgs, controlling their flight via neural implants.

Finding a power source that’s light enough for these beetles to port around has been difficult, but now, a team of roboticists have found that harvesting power from their beating wings could be a way to make these ‘borgs go battery-less.

(more…)

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September 2nd, 2011 Tags: energy scavenging, MAVs, micro-air-vehicles, piezolectricity, robots
by Veronique Greenwood in Physics & Math, Technology | 8 Comments » | RSS feed | Trackback >

For Authoritarian Regimes, Turning Off the Internet is a Fatal Mistake, Study Says

tahrir
Once the Egyptian government cut the Internet, the protests in Tahrir Square were joined by protests across the country.

What’s the News: Social networking has been a star of the Arab Spring revolutions. People can’t stop talking about how Twitter and Facebook helped protestors organize, and when Egyptian president Hosni Mubarak suddenly cut access to the Internet and cell phone service on January 28th, many wondered how the protestors would share information and keep momentum. But as it turned out, depriving people of information had an explosive effect—far from the epicenter at Tahrir Square in Cairo, so many grassroots protests sprung up that the military was brought in. Two weeks later, Mubarak resigned.

Using the Egyptian revolution as a case study, a new paper makes the case that theories of group dynamics explain why access to information can actually have a quenching effect on revolutions, and argues that regimes that shut information sources down are signing their own death warrants.

(more…)

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August 30th, 2011 Tags: Arab Spring, Egypt, Facebook, group dynamics, social networking, social science, Tahrir Square, Twitter
by Veronique Greenwood in Technology, Top Posts | 10 Comments » | RSS feed | Trackback >

In Development: Networks of Unmanned Quadcopters to Ferry Medicine to Isolated Areas


Matternet’s design for a Medical Aid Quadcopter

What’s the News: Many of the unmanned aerial vehicles we hear about are flying off to war, laden with weapons or surveillance equipment. The tech start-up Matternet, however, is designing small quadcopter UAVs to carry peaceable payloads, delivering medical supplies and other necessities to areas dangerous or difficult to reach by road.

(more…)

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August 30th, 2011 Tags: developing world technologies, robots, telemedicine, unmanned vehicles
by Valerie Ross in Technology | 5 Comments » | RSS feed | Trackback >

Could Power-Scavenging Shoes Recharge Your Phone?

shoes

What’s the News: We’ve all fantasized about a cell phone battery that won’t quit. Now scientists hoping to harness the power generated when you walk are developing a device that might eventually use your footfalls to power small electronics. But will it overcome the hurdles of efficiency and cost?

(more…)

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August 24th, 2011 Tags: electricity, energy harvesting, piezoelectricity, power, shoes
by Veronique Greenwood in Technology, Top Posts | 5 Comments » | RSS feed | Trackback >

A Brainy New Chip Could Make Computers More Like Humans


One of IBM’s prototype cognitive computing chips

What’s the News: Researchers at IBM have developed a new “cognitive computing” microchip inspired by the brain’s computational tricks. These new chips, the researchers say, could make processors that are more powerful and more efficient than today’s computers—and better at the flexible learning and responses that are a struggle for current AI systems but a breeze for the human brain.

(more…)

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August 19th, 2011 Tags: computer chip, IBM, neural networks, processors
by Valerie Ross in Mind & Brain, Technology, Top Posts | 17 Comments » | RSS feed | Trackback >

By Aligning Databases, Scientists Match Old Drugs with New Diseases

pills

What’s the News: For all the testing we do, drugs are still mysterious things—they can activate pathways we never connected with them or twiddle the dials in some far-off part of the body. To see if drugs already FDA-approved for certain diseases could be used to treat other conditions, scientists lined up two online databases and discovered two drugs that, when tested in mice, worked against diseases they’d never been meant for, suggesting that mining of such information could be a fertile strategy for finding new treatments.

(more…)

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August 18th, 2011 Tags: drug design, drug discovery, inflammatory bowel disease, lung cancer
by Veronique Greenwood in Health & Medicine, Technology, Top Posts | 9 Comments » | RSS feed | Trackback >

Eyes on the Radioactive Wind, Scientists in California Study the Fukushima Meltdown

fukushimaClean-up teams at Fukushima struggled to control the melting fuel rods.

What’s the News: After the disastrous March 11 earthquake and tsunami in Japan, the world waited, mostly in vain, for details about the events that led to meltdown at the Fukushima Daiichi nuclear plant. Since then, scientists across the Pacific in California have been watching the dials of instruments that detect radioactive molecules, to see what might come across on the winds.

This week, scientists at Scripps published their readings of radioactive sulfur collected in the atmosphere in San Diego after the meltdown. These allowed them to extrapolate backwards to learn roughly how many neutrons were shed by the melting cores as workers desperately doused them in sea water, helping scientists understand the damage undergone by the cores and demonstrating the kind of remote science that may be required to help understand the events that led to meltdown.

(more…)

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August 16th, 2011 Tags: Fukushima Daiichi, neutrons, PNAS, radioactive decay, Scripps
by Veronique Greenwood in Physics & Math, Technology, Top Posts | 5 Comments » | RSS feed | Trackback >

How to Take Stunning Microscopic Images–Without a Microscope

<p>To see the world on the microscopic level, you usually need, well, microscopes. But with sensitive cameras and a gel that deforms around even the ink on a printed page, <a href="http://web.mit.edu/newsoffice/2011/tactile-imaging-gelsight-0809.html">a team at MIT has developed a compact, portable equivalent</a>. A device about the size of a soda can, it can register objects as small as two micrometers across.</p>
<p>A little pad of gel, coated on one side with metallic paint, is at the center of the device. When pressed against a finger, a dollar bill, or a Post-It, the paint on the gel gently bends to fit the form of the object. Cameras arrayed above the gel snap images of the pattern imprinted in the paint, and computer vision algorithms reconstruct the surface in 3D. The result is beautifully detailed imagesof such objects as the individual barbules of a feather, shown above.</p><p>Taking pictures of objects’ microscopic texture would be easier if their surfaces had the same reflective properties all over. Because human skin absorbs light and has the added complication of tiny hairs, it can be tricky to image clearly, but with the new device, called GelSight, pictures like the one above are easy to snap. Essentially, the thin layer of metallic paint provides a consistent surface for light to reflect from.</p>
<p>It’s like coating a person in silver Lycra: suddenly, every curve is clear.</p><p>In the cylinder of the handheld device (which you can see in action <a href="http://www.youtube.com/watch?feature=player_embedded&amp;v=S7gXih4XS7A">here</a>), three colored lights at different angles shine on the impression left in the metallic paint. Then, cameras arrayed around the tube snap pictures of the impression and assemble a table of color values. Computer vision algorithms then extrapolate from the patterns of colored light on the surface to a 3D reconstruction. The device can capture depths as small as a fraction of a micrometer, allowing printed letters, like these ones, to show up as 3D.</p><p>The GelSight system isn’t a replacement for microscopes in the labs of biologists and others working with the truly tiny: While these pictures resemble images made by a <a href="http://en.wikipedia.org/wiki/Scanning_electron_microscope">scanning electron microscope</a>, they have nowhere near the resolution (SEM images are orders of magnitude finer, on the nanometer rather than micrometer level). But anyone examining the surface of objects—materials scientists, for example, who study materials like concrete, plastic, and glass—it’s an exciting possible addition to their toolkit.</p>
<p>Here, the surface of the sticky part of a Post-It note shows both the fibers of the paper and the globules of glue.</p><p>GelSight might find its true home outside the lab, in providing quality control for manufacturers and perhaps helping forensic investigators, since the patterns left on bullet casings by guns, easily visible with the device, can help pinpoint what weapon was used in a crime. The scientists behind the device are already in talks with several industrial manufacturers and an aerospace company to help provide testing for their products.</p>
<p>For the rest of us, it’s another way to get a glimpse at the small beauties out there in the natural world, like the sand dollar’s spines, above.</p>
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August 16th, 2011 Tags: forensics, GelSight, imaging, materials science, microscopes
by Veronique Greenwood in Technology | 40 Comments » | RSS feed | Trackback >

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