Quantum Echo.

‘It’s really cool,’ says Jeremy O’Brien, an experimenter at the University of Bristol in the United Kingdom, who was not involved in the work. Such time-separated entanglement is predicted by standard quantum theory, O’Brien says, ‘but it’s certainly not widely appreciated, and I don’t know if it’s been clearly articulated before.'”

By utilizing (as I understand it) the transitive properties of quantum entanglement, scientists in Israel manage to link two photons that never exist at the same time. “It’s really neat because it shows more or less that quantum events are outside our everyday notions of space and time…This sort of thing opens up people’s minds and suddenly somebody has an idea to use it in quantum computing or something.”

Commuting – and Evolving – Together.

“As many as 35,000 stray dogs live in Russia’s capital city…Taking the subway is just one of many tactics the strays have come up with for surviving in the manmade wilderness around them. ‘The street is tough and it’s survival of the fittest,’ says Poyarkov. ‘These clever dogs know people much better than people know them.'”

ABC News takes a gander at the subway dogs of Moscow, who, for reasons of survival, seem to have figured out the system better than most tourists. “Moscow’s strays have also been observed obeying traffic lights, says Vereshchagin…Sometimes a pack will send out a smaller, cuter member apparently realizing it will be more successful at begging than its bigger, less attractive counterparts.”

In very related news, a new study finds that, since domestication many moons ago, dogs and humans have been evolving along parallel lines. “The study shows that dogs split from gray wolves about 32,000 years ago, and that since then, domestic dogs’ brains and digestive organs have evolved in ways very similar to the brains and organs of humans…They found both species underwent similar changes in genes responsible for digestion and metabolism, such as genes that code for cholesterol transport.” This must be the reason Berk loves him some gummi candy.

The Pleasures of the Void.

“I slid the blackout door closed behind me, eased down into the water, and touched a button that switched off the lights. I was floating in total darkness and silence…For what must have been the first 15 minutes, I wondered what I was doing there…Then a transformation began…My brain went a little haywire. When the storm passed, I found myself in a new and unfamiliar state of mind.”

To kick off his new Slate column “Anything Once,” friend Seth Stevenson finds himself reveling in the sensation of sensory deprivation. “I emerged in a profound daze. I spoke slowly and quietly, like a smooth-jazz DJ, to the person at the spa desk who inquired how my session had gone. I felt more rested than if I’d slept for 16 hours on a pile of tranquilized chinchillas. Outside, colors were saturated; sounds were vivid. I had to try this again, as soon as possible.”

400 (PPM) Blows.

“The news that CO2 is near 400 ppm for the first time highlights a question that scientists have been investigating using a variety of methods: when was the last time that CO2 levels were this high, and what was the climate like back then?…By drilling for ice cores and analyzing the air bubbles, scientists have found that, at no point during at least the past 800,000 years have atmospheric CO2 levels been as high as they are now.”

Carbon concentration in the atmosphere veers dangerously close to the dubious milestone of 400 part per million. (The revised reading came out at 399.89.) “For the previous 800,000 years, CO2 levels never exceeded 300 ppm, and there is no known geologic period in which rates of increase have been so sharp. The level was about 280 ppm at the advent of the Industrial Revolution in the 18th century, when the burning of fossil fuels began to soar.”

Follow the Bouncing Dot.

“‘We are trying to understand how human motor performance changes with age,’ the researchers say. ‘We believe that research should be done in collaboration with people—with people like you who are interested in learning about themselves and helping research.'”

An online Harvard experiment tries to guess your age by evaluating your mouse-clicking ability. Hard to say how good it is, really. It deemed me thirty — eight years too young — but then again, with blogging and gaming both ranking high among the extra-curriculars, I probably use a mouse more than most people too.

The Secrets Beneath.

“The Cryogenic Dark Matter Search experiment has detected three events with the characteristics expected of dark matter particles…A statistical fluctuation of the experimental background is likely to produce three or more events resembling this result a little over 5 percent of the time. However, all three of these events have energies more like those expected of a low-mass dark-matter particle, something that should happen by chance only 0.19 percent of the time.”

There are older things than Orcs in the deep places of the world: Symmetry Magazine checks in with the Cryogenic Dark Matter Search experiment happening a mile beneath Minnesota. As I’ve mentioned before, I came close to spending a summer in high school standing around a similar underground science project, searching for neutrinos. “The year 2013 should be an interesting one in the search for dark matter.”

A Home Next Door in Centauri Bb.

“The triple star system of Alpha Centauri is only 4.3 light-years — about 25 trillion miles — away. The possibility of an earth-like world orbiting our nearest neighbor has been a kind of holy grail of astronomy —- and something taken for granted by countless SciFi authors.”

Hey neighbor: Astronomers find an Earth-like planet just next door in Alpha Centauri, the nearest star system to our sun. “Indeed, Alpha Centauri Bb is the first planet with an earth-like mass ever found orbiting a sun-like star.” That being said, prospects for life — or colonization — seem, for the time being, remote. “Unfortunately for any hope of finding life on this world, it orbits only about four million miles away…This would make Alpha Centauri B more than twenty times larger in the planet’s sky than the sun is here on earth…and more than 500 times brighter and hotter.”

The Expanding Nation.

“This shows the percentages of the U.S. population medically defined as obese, which means a body mass index of 30 or greater…By now everyone knows obesity is a serious issue, but it always helps me to see things moving and in color, and makes the ‘epidemic’ terminology make sense.

A troubling GIF captures twenty-five years of expanding waistlines in America. “Meanwhile, through 2012, no state has met the CDC’s nationwide goal to reduce obesity to 15 percent.” Update: The states behind the curve? Everyone could be lying.