Look into my eyes
And feed me a cracker:
Professor Jin Zhang of the University of Western Ontario has developed contact lenses which could help monitor diabetes by changing color with the user’s glucose level variations. The users will be alerted to dangerous sugar levels with a change in lens color, without needing to undergo regular blood tests. The hydrogel lenses are embedded with nanoparticles which change color by reacting with the glucose in wearer’s tears.
the latest on the cloak of invisibility
Researchers have been able to construct a device that hid a tiny bump on a piece of gold.
The cloak is a structure of crystals with air spaces in between, sort of like a woodpile, that bends light, hiding the bump in the gold later beneath, the researchers reported in Thursday’s online edition of the journal Science.
In this case, the bump was tiny, a mere 0.00004 inch high and 0.0005 inch across, so that a magnifying lens was needed to see it.
“In principle, the cloak design is completely scalable; there is no limit to it,” Ergin said. But, he added, developing a cloak to hide something takes a long time, “so cloaking larger items with that technology is not really feasible.”
“Other fabrication techniques, though, might lead to larger cloaks,” he added in an interview via e-mail.
supersized quantum mechanics
The day I see ”double-decker buses simultaneously stopping and going” is the day I remove my cat from its hermetically sealed box:
Cleland and his team took a more direct measure of quantum weirdness at the large scale. They began with a a tiny mechanical paddle, or ‘quantum drum’, around 30 micrometres long that vibrates when set in motion at a particular range of frequencies. Next they connected the paddle to a superconducting electrical circuit that obeyed the laws of quantum mechanics. They then cooled the system down to temperatures below one-tenth of a kelvin.
At this temperature, the paddle slipped into its quantum mechanical ground state. Using the quantum circuit, Cleland and his team verified that the paddle had no vibrational energy whatsoever. They then used the circuit to give the paddle a push and saw it wiggle at a very specific energy.
(via kottke)
This is Fermi 2
Sounds like a Muppet name, doesn’t it?
Last week I drove to Michigan on business south of Detroit and saw these cooling towers in the near distance. I’ve seen them from I-75 before, but they always seemed so far off the highway. I was mesmerized, couldn’t get close enough. I asked the nice man at the gate if I could drive closer to take pictures and he said, “you can drive to those pylons up ahead and make a u-turn and get on outta here.” He didn’t say it, but “little Missy” was implied by his tone of voice.
The first Fermi reactor (Fermi 1) suffered a partial meltdown and a release of radiation in 1966 during a test run. Engineers were able to intervene and contain the radiation, but the accident caused quite a scare and even prompted some officials to initially consider evacuating portions of southeastern Michigan, including the city of Detroit. Fermi 1 finally began operating again in 1970, but shut down for good in 1972.
But everything’s okay now!
we were just gaga over it
NASA finds life beneath an antarctic ice-shelf.
Six hundred feet below the ice where no light shines, scientists had figured nothing much more than a few microbes could exist.
That’s why a NASA team was surprised when they lowered a video camera to get the first long look at the underbelly of an ice sheet in Antarctica. A curious shrimp-like creature came swimming by and then parked itself on the camera’s cable. Scientists also pulled up a tentacle they believe came from a foot-long jellyfish.
So. You want to go for it, do you?
No good will come of cloning Neanderthals.
cloning neanderthals
Hawks believes the barriers to Neanderthal cloning will come down. “We are going to bring back the mammoth…the impetus against doing Neanderthal because it is too weird is going to go away.” He doesn’t think creating a Neanderthal clone is ethical science, but points out that there are always people who are willing to overlook the ethics. “In the end,” Hawks says, “we are going to have a cloned Neanderthal, I’m just sure of it.”
I love the future.
(via marginal revolution)
Black Penguin
King Penguins are notorious for their prim, tuxedoed appearance — but a recently discovered all-black penguin seems unafraid to defy convention. In what has been described as a “one in a zillion kind of mutation,” biologists say that the animal has lost control of its pigmentation, an occurrence that is extremely rare. Other than the penguin’s monochromatic outfit, the animal appears to be perfectly healthy — and then some. “Look at the size of those legs,” said one scientist, “It’s an absolute monster.”
the sixth taste
“We know that the human tongue can detect five tastes — sweet, salty, sour, bitter and umami (a savoury, protein-rich taste contained in foods such as soy sauce and chicken stock),” Russell Keast, from Deakin University, said Monday.
“Through our study we can conclude that humans have a sixth taste — fat.”
(via kottke)
We are made of star stuff
asteroid v. volcanco
A panel of 41 scientists from across the world reviewed 20 years’ worth of research to try to confirm the cause of the so-called Cretaceous-Tertiary (KT) extinction, which created a “hellish environment” around 65 million years ago and wiped out more than half of all species on the planet.
Scientific opinion was split over whether the extinction was caused by an asteroid or by volcanic activity in the Deccan Traps in what is now India, where there were a series of super volcanic eruptions that lasted around 1.5 million years.
Click here to find the answer now!
It was the asteroid.
earthquakes alter axis
The Chilean earthquake may have shifted the earth’s axis and shortened its days.
Strong earthquakes have altered Earth’s days and its axis in the past. The 9.1 Sumatran earthquake in 2004, which set off a deadly tsunami, should have shortened Earth’s days by 6.8 microseconds and shifted its axis by about 2.76 inches (7 cm, or 2.32 milliarcseconds).
Compressed sensing
An algorithm that resolves high resolution images from next to nothing.
Compressed sensing was discovered by chance. In February 2004, Emmanuel Candès was messing around on his computer, looking at an image called the Shepp-Logan Phantom. The image — a standard picture used by computer scientists and engineers to test imaging algorithms — resembles a Close Encounters alien doing a quizzical eyebrow lift. Candès, then a professor at Caltech, now at Stanford, was experimenting with a badly corrupted version of the phantom meant to simulate the noisy, fuzzy images you get when an MRI isn’t given enough time to complete a scan. Candès thought a mathematical technique called l1 minimization might help clean up the streaks a bit. He pressed a key and the algorithm went to work.
the origin of tiny dogs
Melissa Gray, a genetic researcher, has tracked the mutation of a gene in dogs — IGF1 — that controls for size, and is not seen in gray wolf populations (from which dogs were domesticated) to the Middle East where, 13,000 years ago, blah, blah, blah…. Whatever, I mostly just wanted to post the photo.
Texas Evolution: a significant proportion of the American people think that the ‘The Flintstones’ is a documentary
Nearly a third of Texans believe humans and dinosaurs roamed the earth at the same time, and more than half disagree with the theory that humans developed from earlier species of animals, according to the University of Texas/Texas Tribune Poll.
this just in
Egypt’s famed King Tutankhamun suffered from a cleft palate and club foot, likely forcing him to walk with a cane, and died from complications from a broken leg exacerbated by malaria, according to the most extensive study ever of his more than 3,300-year-old mummy.
the rare earth crisis of 2009
China is the only country capable at the moment of mining and processing the rare earth elements used in dozens of emerging technologies. With China’s increase in consumption, however, manufacturers around the world are concerned China may limit or halt the export of such materials.
Europium: This extremely rare but critical chemical makes the red color for television monitors and energy-efficient LED light bulbs. China is the only country today that produces europium, dysprosium and terbium, which are necessary for either boosting the efficient operating temperature of magnets or for producing red in color displays. In December, USGS scientists discovered Alaskan deposits of europium, but even the few U.S. companies that mine rare earth elements must send the resources to China for processing.
Lanthanum: A primary component of the nickel-metal hydride battery in Toyota’s popular hybrid car, Prius. The Prius also incorporates neodymium, praseodymium, dysprosium and terbium. Lifton estimates that Toyota may use as much as 7,500 tons of lanthanum and 1,000 tons of neodymium per year to build its Prius cars. That dependence on rare earth elements has prompted the company to search for alternative sources outside China.
Neodymium: This represents a main component of the permanent magnets at the heart of the most efficient wind turbines. China’s own wind production efforts could consume all the available neodymium production and leave nothing for the rest of the world’s booming wind industry, Lifton notes in a recent report titled “The Rare Earth Crisis of 2009.” Neodymium is also used in the glass of incandescent light bulbs produced by General Electric, which has unsurprisingly invested in both Chinese and alternative sources of rare earth elements.
this unique 18-minute genre has its own requirements
From a Wired article on how to ace a TED Talk:
“I’m surprised to see that half the people here know my career in some detail and the other half don’t know who I am,” he says.
Science is fine, but not when it messes with our illusions.
If she had included solar power and African child warriors, it would have been so perfect a TED talk that there would have been no need for others.
Wolfram wraps his talk by saying that when it comes to trying to boil down the universe to a simple algorithm, “it’s almost embarrassing not to at least try.”
“Just because someone has an ego,” he says, citing a writer whose name I can’t read from my scribbled notes, “doesn’t mean he’s wrong.”
the biology of design
The biological effects of what you drive:
Theory
Scientists have spent over a hundred years formulating theories to explain the existence of Aston Martins. In 1899, the economist Thorstein Veblen published his seminal work The Theory of the Leisure Class, in which he postulated that we buy expensive things not so much for their inherent qualities, but for the attention we receive as we experience said object. He predicted the rise of modern image-driven marketing, which accords value to things exactly because they are expensive and seemingly exclusive — the reason why people pay a premium for a Lexus RX over its mechanical twin the Toyota Highlander. In Veblen’s worldview, Aston Martins exist because of how they make other people feel, ejector seats or no.
Practice
Saad and Vongas had 39 male college students drive two different cars for an hour each, first in crowded city (lek) and then in open highway (non-lek) environments. The cars? One was a clapped-out 1990 Camry wagon with almost 200,000 miles on the clock. The other was a 2006 Porsche 911 Carrera 4S Cabriolet. During their drives in each car, drivers had saliva samples taken to evaluate changes in testosterone levels while in the lek (city driving with lots of witnesses) and out of the lek (on the highway, with nobody there to witness their driving). To eliminate testosterone level variations due to individuals slaking their need for speed, each student promised not to burst posted speed limits.
I’ve posted on this before, but it’s always interesting.
There’s an Explanation for That
Vice Magazine, like everyone else, is checking the Creation Museum off of their to-do list. The above snapshot is from the museum’s explanation regarding the inevitable incest that would befall the family of a literal Adam & Eve.
It seems like science you could hang your hat on.
suspended animation, metabolic flexibility in mammals
Mark Roth is a cellular biologist who has studied using hydrogen sulfide to induce suspended animation as a way to increase the likelihood of survival in both traumatic injury and surgery.
But then you have these freaks of nature. . . . There’s a retrospective study that was published in the New England Journal of Medicine ten years ago that shows that 50 percent of people who have been without a heartbeat for three hours [in cold conditions], and are re-warmed appropriately, survive without neurological problems. The people in that study spent at least three hours below 28 degrees. The record is a 29-year-old skier in Norway who went for nine hours. Her core temperature fell to below 14 degrees C. Remember, people are large bags of water; they take a long time to cool off and a long time to re-warm. It took her nine hours to get to a point where they could re-start her heart, and she went on to be the head radiologist in the hospital that treated her.
nicknamed Inuk
Recent advances in sequencing technologies have allowed scientists to sequence the DNA of a Greenlander who died 4,000 years ago.
The DNA gives strong hints about the man, nicknamed Inuk. “Brown eyes, brown skin, he had shovel-form front teeth,” Eske Willerslev, who oversaw the study, told a telephone briefing. Such teeth are characteristic of East Asian and Native American populations.
He had the genes for early hair loss, too. “Because we found quite a lot of hair from this guy, we presume he actually died quite young,” Willerslev said.
Pluto is changing color
See also: crash blossoms.
strange flowers
Bees can learn to recognize human faces.
Rather than specifically recognizing people, these nectar-feeding creatures view us as “strange flowers,” the researchers say. And while they might not be able to identify individual humans, they can learn to distinguish features that are arranged to look like faces.
I’m Listening
(via)