MakerBot founder Bre Pettis kicked off the first day of the South By Southwest Interactive festival (SXSW) running from March 8-17 in Austin, Texas, by introducing a desktop 3D scanner dubbed the MakerBot Digitizer designed to let users scan a physical item and digitize it so it can be replicated using a 3D printer.
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A real-life “tractor beam”, which uses light to attract objects, has been developed by scientists.
It is hoped it could have medical applications by targeting and attracting individual cells.
The research, published in Nature Photonics and led by the University of St Andrews, is limited to moving microscopic particles.
In science fiction programmes such as Star Trek, tractor beams are used to move much more massive objects.
It is not the first time science has aimed to replicate the feat – albeit at smaller scales.
Scientists have stored audio and text on fragments of DNA and then retrieved them with near-perfect fidelity
Scientists have stored audio and text on fragments of DNA and then retrieved them with near-perfect fidelity—a technique that eventually may provide a way to handle the overwhelming data of the digital age.
The scientists encoded in DNA—the recipe of life—an audio clip of Martin Luther King Jr.’s “I Have a Dream” speech, a photograph, a copy of Francis Crick and James Watson’s famous “double helix” scientific paper on DNA from 1953 and Shakespeare’s 154 sonnets. They later were able to retrieve them with 99.99% accuracy. http://goo.gl/xMueJ
The experiment was reported Wednesday in the journal Nature
Senator Dianne Feinstein,
I will not register my weapons should this bill be passed, as I do not believe it is the government’s right to know what I own. Nor do I think it prudent to tell you what I own so that it may be taken from me by a group of people who enjoy armed protection yet decry me having the same a crime. You ma’am have overstepped a line that is not your domain. I am a Marine Corps Veteran of 8 years, and I will not have some woman who proclaims the evil of an inanimate object, yet carries one, tell me I may not have one.
I am not your subject. I am the man who keeps you free. I am not your servant. I am the person whom you serve. I am not your peasant. I am the flesh and blood of America.
I am the man who fought for my country. I am the man who learned. I am an American. You will not tell me that I must register my semi-automatic AR-15 because of the actions of some evil man.
I will not be disarmed to suit the fear that has been established by the media and your misinformation campaign against the American public.
We, the people, deserve better than you.
Cpl, United States Marine Corps
Retinal prostheses such as the Argus II, Bio-Retina and the Retina Implant AG microchip all work – more or less – by stimulating the retina’s ganglion cells with light-induced electrical signals. The images produced in the patient’s visual cortex tend to be quite rudimentary, however. This is partially because the rate at which the signals are sent isn’t the same as the rate of neural impulses normally produced by a retina. Now, researchers have deciphered the neural code used by mouse ganglion cells, and used it to create a prosthesis that reportedly restores normal vision to blind mice. They have additionally deciphered the neural code of monkeys, which is close to that used by humans, so a device for use by blind people could also be on the way.
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Tired of lugging around that keychain flash drive? Wondering how government will be able to store and rapidly access all of those yottabytes of data they are collecting about you and the other 7 billion people on the planet?
A new data storage method created by researchers at Harvard Medical School in Boston promises to change the shape of the data collection and storage industry forever by converting data into biological bytes stored within the fibers of DNA. The new technology would allow the amount of data stored on a DVD to be sequenced into a biodrive that weighs approximately one trillionth of a gram. It’s the highest known storage density ever devised.
When it comes to storing information, hard drives don’t hold a candle to DNA. Our genetic code packs billions of gigabytes into a single gram. A mere milligram of the molecule could encode the complete text of every book in the Library of Congress and have plenty of room to spare. All of this has been mostly theoretical—until now. In a new study, researchers stored an entire genetics textbook in less than a picogram of DNA—one trillionth of a gram—an advance that could revolutionize our ability to save data.
A few teams have tried to write data into the genomes of living cells. But the approach has a couple of disadvantages. First, cells die—not a good way to lose your term paper. They also replicate, introducing new mutations over time that can change the data.
To get around these problems, a team led by George Church, a synthetic biologist at Harvard Medical School in Boston, created a DNA information-archiving system that uses no cells at all. Instead, an inkjet printer embeds short fragments of chemically synthesized DNA onto the surface of a tiny glass chip. To encode a digital file, researchers divide it into tiny blocks of data and convert these data not into the 1s and 0s of typical digital storage media, but rather into DNA’s four-letter alphabet of As, Cs, Gs, and Ts. Each DNA fragment also contains a digital “barcode” that records its location in the original file. Reading the data requires a DNA sequencer and a computer to reassemble all of the fragments in order and convert them back into digital format. The computer also corrects for errors; each block of data is replicated thousands of times so that any chance glitch can be identified and fixed by comparing it to the other copies.
To demonstrate its system in action, the team used the DNA chips to encode a genetics book co-authored by Church. It worked. After converting the book into DNA and translating it back into digital form, the team’s system had a raw error rate of only two errors per million bits, amounting to a few single-letter typos. That is on par with DVDs and far better than magnetic hard drives. And because of their tiny size, DNA chips are now the storage medium with the highest known information density, the researchers report online today in Science.
Source: Science Now