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An anonymous reader writes "At a symposium at the Dutch Spinoza-instituut on 8 December, 2009, string theorist Erik Verlinde introduced a theory that derives Newton's classical mechanics. In his theory, gravity exists because of a difference in concentration of information in the empty space between two masses and its surroundings. He does not consider gravity as fundamental, but as an emergent phenomenon that arises from a deeper microscopic reality. A relativistic extension of his argument leads directly to Einstein's equations." Here are two blog entries discussing Verlinde's proposal in somewhat more accessible terms.
Update: 01/12 04:48 GMT by KD : Dr. Verlinde has put up a blog post explaining in simpler terms the logic of the gravity from entropy paper. He introduces it with: "Because the logic of the paper is being misrepresented in some reports, I add here some clarifications."

An anonymous reader writes "At a symposium at the Dutch Spinoza-instituut on 8 December, 2009, string theorist Erik Verlinde introduced a theory that derives Newton's classical mechanics. In his theory, gravity exists because of a difference in concentration of information in the empty space between two masses and its surroundings. He does not consider gravity as fundamental, but as an emergent phenomenon that arises from a deeper microscopic reality. A relativistic extension of his argument leads directly to Einstein's equations." Here are two blog entries discussing Verlinde's proposal in somewhat more accessible terms.
Update: 01/12 04:48 GMT by KD : Dr. Verlinde has put up a blog post explaining in simpler terms the logic of the gravity from entropy paper. He introduces it with: "Because the logic of the paper is being misrepresented in some reports, I add here some clarifications."

Dagondanum writes "Multiple missions have been sent to Mars with the hopes of testing the surface of the planet for life — or the conditions that could create life. The question of whether life in the form of bacteria (or something even more exotic) exists on Mars is hotly debated, and still lacks a definitive yes or no. Experiments done right here on Earth that simulate the conditions on Mars and their effects on terrestrial bacteria show that it is entirely possible for certain strains of bacteria to weather the harsh environment of Mars." Perhaps this is something that will be tested further in a few years by the Mars Science Lab, also known as "Curiosity" and (as reader Nova1021 points out) "the Mars Action Hero."

TaeKwonDood writes "You might think throwing out the occasional titillating article title is part of some grand media strategy. Discover is famous for whoring themselves out for page views with articles like Bizarre Aquatic Creatures Are Secretly Lesbian Necrophiliacs and Scientific American gets into the act with Rough Sex at 40,000 Leagues Under the Sea, which got them additionally ridiculed because that is about 30X greater than the radius of the Earth, but there are occasionally real articles that aren't all tramped up and just happen to deal with sex; some of it even kinky. All of it involving cortisol. The difficulty? Kinky people are okay with being monitored and they don't always realize what 'control' means in a scientific context, but they sure don't like to stick within the study parameters."

ghostlibrary writes "March Madness for geeks — NASA has up its Mission Madness stunt — 6 rounds of head-to-head mission competition. This isn't to decide funding for new stuff, nor is it a robot war. Instead, it's a popularity contest, with the added plus of trying to predict beforehand which missions will win. Each bracket winnows out half the mission choices, to ultimately determine which was the most popular NASA mission. The first voting round is today, act quick to get in on the geeky action, or just browse it April 8th if you want to skip ahead to the results. I have my guess of how it well end up on my astronomy blog, but obviously seeing my predictions before you cast your own may skew the results. Remember, this isn't science, it's sociology."

TaeKwonDood writes "Do you want the bad news first or the good news? The good news is that about 80% of Americans think science knowledge is 'very important' to our future. The bad news is most of those people think it's up to someone else to get knowledgeable. Only 15% actually know how much of the planet is covered in water (47% if you accept a rough approximation of the exact number) and over 40% think dinosaurs and humans cavorted together like in some sort of 'Land Of The Lost' episode. What to do? Pres. Obama thinks merit pay for teachers makes sense. Yes, it will enrage the teachers' union, but it might inspire better people to go into science teaching. It's either that or accept that almost 50% of Americans won't know how long it takes the earth to go around the sun."

Several sources are reporting that in spite of LHC hype, Fermilab's Tevatron has produced another feat for scientific discovery. Currently the world's most powerful operating particle accelerator, the Tevatron has allowed researchers to observe a rare single Top Quark. "Previously, top quarks had only been observed when produced by the strong nuclear force. That interaction leads to the production of pairs of top quarks. The production of single top quarks, which involves the weak nuclear force and is harder to identify experimentally, has now been observed, almost 14 years to the day of the top quark discovery in 1995."

TaeKwonDood writes "LEDs don't beat CFLs in the home yet, but it's not simply because PG&E is getting rich making people feel like they are helping the environment buying CFLs made in China that are shipped to the US using a lot more fossil fuels than they save. It's a problem of indication versus illumination. However, some new discoveries are going to change all that."

TaeKwonDood tips us to news that a new cancer resistance treatment is going into clinical trials after being quite successful at eradicating cancer in mice. Researchers discovered that certain white blood cells called granulocytes from cancer-immune mice were able to cure cancer in other mice. Now, doctors are putting out the call for healthy granulocyte donors in order to test how well it works on humans. The article quotes lead researcher Zheng Cui saying, "In mice, we've been able to eradicate even highly aggressive forms of malignancy with extremely large tumors. Hopefully, we will see the same results in humans. Our laboratory studies indicate that this cancer-fighting ability is even stronger in healthy humans."

TaeKwonDood writes to tell us that another step towards Star Trek's Holodeck technology has been taken with the advent of HoloVizio 3D. Allowing users to see and manipulate objects in 3D without the assistance of goggles, this distributed system shows a lot of promise. "The HoloVizio is a 3-D screen that will allow designers to visualize true 3-D models of cars, engines or components. Better yet, gesture recognition means that observers can manipulate the models by waving their hands in front of the screen. The function offers enormous scope for collaboration across the globe."

TaeKwonDood writes "Automated machines have been around for decades. They have basically been dumb devices that do simple assembly tasks. But RepRap takes that a step further because, instead of assembling pre-fabricated parts, it creates 3-D objects by printing them — squirting molten plastic in layers — and then building them up as the plastic solidifies. It works on coat hooks, door handles and now it can even make working copies ... of itself. The miracle of additive fabrication, coming soon to a robotic overlord near you."

TaeKwonDood writes "Is it reptile, bird or mammal? Some of each. Does it have venom, lay eggs and lactate? Yes. Upon discovery in 1798, fellow scientists thought it was for an episode of 'Thou hast been Punk'd,' but this Australia native, on home on land and in water, is real and, finally, it gets its own decoded genome. It's no surprise the DNA is as messed up as the critter itself."

TaeKwonDood writes "Biology post-doc Dr. Michael White takes a look at the '2007 Best American Science and Nature Writing' and doesn't like what he finds in an article called Bad Science Journalism and the Myth of the Oppressed Underdog. Turns out it's not just political writers who pick a position they want to advocate and then write stories to confirm it. Science journalism gets a scolding and it's been a long time coming."

TaeKwonDood notes that ScientificBlogging.com has just written about a development in applied math that was published last year. "The Schwarz-Christoffel transformation is an elegant application of conformal mapping to make complex problems faster to solve. But it didn't do well with irregular geometries or holes, so it simplified too much for a lot of modern-day mechanical engineering applications. 140 years after Schwarz and Christoffel's work, a professor at Imperial College London has generalized the equation. MatLab users rejoice!"

eldavojohn writes "There's a new antenna that consists of plasma and essentially vanishes when you turn it off. While it may seem to not have many uses in the commercial world, it is very important to military personnel who risk detection or for anybody wishing to avoid signal jamming."