egjertse writes "A Louisiana law that opponents say leaves the backdoor open to teaching 'creationism' in public schools will stay on the books after a Senate committee Wednesday effectively killed a bill that would repeal the statute. After hours of testimony for and against House Bill 26, which repeals the 2008 Louisiana Science Education Act, the senators narrowly deferred the legislation, effectively killing it in committee. The bill was sponsored by Sen. Karen Carter Peterson, D-New Orleans."
Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!
mikejuk writes with news of an advancement for homomorphic encryption and open source: "To be fully homomorphic the code has to be such that a third party can add and multiply numbers that it contains without needing to decrypt it. In other words they can change the data by working with just the encrypted version. This may sound like magic but a fully homomorphic scheme was invented in 2009 by Craig Gentry. This was a step in the right direction but the problem was that it is very inefficient and computationally intensive. Since then there have been a number of improvements that make the scheme practical in the right situations Now Victor Shoup and Shai Halevi of the IBM T J Watson Research Center have released an open source (GPL) C++ library, HElib, as a Github project. The code is said to incorporate many optimizations to make the encryption run faster. Homomorphic encryption has the potential to revolutionize security by allowing operations on data without the need to decrypt it."
An anonymous reader writes "Turns out that condensation on your favorite chilled beverage is a bad thing for keeping it cold. Two researchers conducted an experiment in their bathroom proving that condensation can raise the temperature of your beer by nine degrees!"
First time accepted submitter ruhri writes "A 16 year-old girl in Florida not only has been expelled from her high school but also is being charged as an adult with a felony after replicating the classic toilet-bowl cleaner and aluminum foil experiment. This has quite a number of scientists and science educators up in arms. The fact that she's African American and that the same assistant state attorney has decided not to charge a white teenager who accidentally killed his brother with a BB gun has some thinking whether this is a case of doing science while black."
sciencehabit writes "An insect's compound eye is an engineering marvel: high resolution, wide field of view, and incredible sensitivity to motion, all in a compact package. Now, a new digital camera provides the best-ever imitation of a bug's vision, using new optical materials and techniques. This technology could someday give patrolling surveillance drones the same exquisite vision as a dragonfly on the hunt."
ckwu writes "Since the 1970s, physicists have used laser beams to trap and study small objects, from cells down to individual atoms. Now, electrical engineers at the University of Southern California have developed a simple optical system that assembles hundreds of nanoparticles into two-dimensional structures using a single laser beam and a silicon photonic crystal. This compact optical trap fits on a small chip and could eventually help researchers make materials for new types of sensors, optical devices, and chemical filters."
g01d4 writes "On March 29, 2012, NASA scientists learned that the space agency's Fermi Gamma-ray Space Telescope was headed for a potential conjunction (close approach) with Cosmos 1805, a defunct Russian satellite from the Cold War era. The team knew that the only way to move Fermi would be to fire thrusters designed to move the spacecraft out of orbit at the end of its operating life. On April 3rd, shortly after noon EDT, the space agency fired all thrusters for one second. When it was over, everyone involved 'just sighed with relief that it all went well.' By 1 p.m., the spacecraft had returned to its mission."
Rambo Tribble writes "The BBC has posted a gallery of images showing storms on some of our solar system's other planets. The pictures are both intriguing and stunning."
ceview writes "This story at Wired seems to have lots of people a bit confused: 'In February 2012, the Nobel Prize-winning physicist Frank Wilczek decided to go public with a strange and, he worried, somewhat embarrassing idea. Impossible as it seemed, Wilczek had developed an apparent proof of "time crystals" — physical structures that move in a repeating pattern, like minute hands rounding clocks, without expending energy or ever winding down. ... [A] Berkeley-led team will attempt to build a time crystal by injecting 100 calcium ions into a small chamber surrounded by electrodes. The electric field generated by the electrodes will corral the ions in a "trap" 100 microns wide, or roughly the width of a human hair. The scientists must precisely calibrate the electrodes to smooth out the field. Because like charges repel, the ions will space themselves evenly around the outer edge of the trap, forming a crystalline ring.' The experimental set up is incredibly delicate (Bose Einstein Condensate), so it implies this perpetual motion effect can't really be used to extract energy. What is your take on it? It's unlike to upend anything, as the article suggests, because at a quantum level things behave weirdly at the best of times. The heavy details are available at the arXiv."
New submitter Doug Otto sends word that researchers working on the ALPHA experiment at CERN are trying to figure out whether antimatter interacts with gravity in the same way that normal matter does. The ALPHA experiment wasn't designed to test for this, but they realized part of it — an antihydrogen trap — is suitable to collect some data. Their preliminary results: uncertain, but they can't rule it out. From the article: "Antihydrogen provides a particularly useful means of testing gravitational effects on antimatter, as it's electrically neutral. Gravity is by far the weakest force in nature, so it's very easy for its effects to be swamped by other interactions. Even with neutral particles or atoms, the antimatter must be moving slowly enough to perform measurements. And slow rates of motion increase the likelihood of encountering matter particles, leading to mutual annihilation and an end to the experiment. However, it's a challenge to maintain any antihydrogen long enough to perform meaningful experiments on it, regardless of its speed. ... The authors of the current study realized that [antiatoms trapped in ALPHA] eventually escaped or were released from this magnetic trap. At that point, they were momentarily in free-fall, experiencing no force other than gravity. The detectors on the outside of ALPHA could then determine if the antihydrogen was rising or falling under gravity's influence, and whether the magnitude of the force was equivalent to the effect on matter."
New submitter cute_orc writes "The International Space Station has been hit by a small object. Chris Hadfield, an astronaut currently on the ISS, described it in his Twitter feed as 'a small stone from the universe.' He also said he was glad it didn't hit the hull. Jim Scotti, a planetary scientist from the University of Arizona, thinks the object may have had a different origin: 'It's unlikely this was caused by a meteor; more likely a piece of man-made space debris in low Earth orbit.'"
Velcroman1 writes "Following the historic first rocket-powered flight of its SpaceShipTwo vehicle, Virgin Galactic plans to build a fleet of spaceships and begin ferrying hundreds of tourists into space in 2014. And then? A whole new kind of spacecraft, Sir Richard Branson said. 'We'll be building orbital spaceships after that,' Branson told Fox News Tuesday, 'so that people who want to go for a week or two can.' Assuming the cost is on the same scale, would you pay a few hundred grand for a few weeks in orbit?"
AmiMoJo writes "The billion-euro Herschel observatory has run out of the liquid helium needed to keep its instruments and detectors at their ultra-low functioning temperature. This equipment has now warmed, meaning the telescope cannot see the sky. Its 3.5m mirror and three state-of-the-art instruments made it the most powerful observatory of its kind ever put in space, but astronomers always knew the helium store onboard would be a time-limiting factor." Reader etash points to a collection of some infrared imagery that Herschel collected.
sl4shd0rk writes "Remember SOPA? If not, perhaps the name Lamar Smith will ring a bell. The U.S. House Committee on Science, Space and Technology chose Smith to Chair as an overseer for the National Science Foundation's funding process. Smith is preparing a bill (PDF) which will require that every grant must benefit 'national defense,' be of 'utmost importance to society,' and not be 'duplicative of other research.' Duplicating research seems reasonable until you consider that this could also mean the NSF will not provide funding for research once someone has already provided results — manufactured or otherwise. A strange target since there is a process in place which makes an effort to limit duplicate funding already. The first and second requirements, even when read in context, still miss the point of basic research. If we were absolutely without-a-doubt-certain of the results, there would be little point in doing the research in the first place."
Zothecula writes "Since the early days of space travel, a consistent complaint has been lousy coffee. Now a group of freshman engineering students at Rice University have developed a simple approach to alleviating this problem. From the article: 'The challenge was to develop a method and equipment that allows astronauts to add liquid ingredients (cream, sweetener, and lemon juice) from a foil package to another that contains black coffee or tea. No spills in microgravity can be allowed, as these have a tendency to migrate into equipment and cause faults. The Rice freshmen designed their system around the existing black coffee pouches. NASA supplied them two-ply heat sealed pouches to hold the sugar syrup and cream. The beverage and condiment pouches all have a septum which allows access to their contents without allowing any of the liquid contents to escape.'"
ehartwell writes "It's official. This morning, after WhiteKnightTwo released SpaceShipTwo at an altitude of around 50,000 feet, pilots Mark Stucky and Mike Alsbury ignited the engine for a roughly 16-second blast. After the engine cutoff, the plane coasted back to its landing back at the Mojave airport. Virgin Galactic tweeted that the pilots confirmed 'SpaceShipTwo exceeded the speed of sound on today's flight!' Its predecessor, SpaceShipOne, first went supersonic December 17, 2003."
kkleiner writes "A team has launched a crowdsourcing campaign to develop sustainable natural lighting by using a genetically modified version of the flowering plant Arabidopsis. Using the luciferase gene, the enzyme responsible for making fireflies glow, the researchers will design, print, and transform the genes into the target plant. The project, which was recently launched on Kickstarter, has already raised over $100k with over a month left to go."
SchrodingerZ writes "The nearest planet outside our solar system has recently been named Albertus Alauda. Originally named Alpha Centauri Bb, the planet is the closest known planet not orbiting the Sun, being a mere 4.3 light years away. The name comes from Jay Lark, who won the naming contest held by Uwingu starting last month and ending on April 22. Lark remarks that the name comes from the Latin name of his late grandfather, stating, "My grandfather passed away after a lengthy and valiant battle with cancer; his name in Latin means noble or bright and to praise or extol." The competition for naming the planet came from Uwing, a company which used the buying of name proposals and votes to fund grants for future space exploration ventures. Albertus Alauda won the competition with 751 votes, followed by Rakhat with 684 votes, and Caleo, with 622 votes."
AchilleTalon writes "One of the only well preserved dinosaur skin samples ever found is being tested at the Canadian Light Source (CLS) synchrotron to determine skin color and to explain why the fossilized specimen remained intact after 70-million years. University of Regina physicist Mauricio Barbi said the hadrosaur, a duck-billed dinosaur from the Late Cretaceous period (100-65 million years ago), was found close to a river bed near Grand Prairie, Alberta."
gmfeier writes "The EPA has significantly lowered its estimate of how much methane leaks during natural gas production. This has major implications for the fracking debate, but puts the EPA at odds with NOAA. From the article: 'The scope of the EPA's revision was vast. In a mid-April report on greenhouse emissions, the agency now says that tighter pollution controls instituted by the industry resulted in an average annual decrease of 41.6 million metric tons of methane emissions from 1990 through 2010, or more than 850 million metric tons overall. That's about a 20 percent reduction from previous estimates. The agency converts the methane emissions into their equivalent in carbon dioxide, following standard scientific practice.'"