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Shark

Scientists Look For Patterns In North Carolina Shark Attacks 33 33

HughPickens.com writes: The Washington Post reports that there have been seven recent shark attacks in North Carolina. Scientists are looking for what might be luring the usually shy sharks so close to shore and among the swimmers they usually avoid. It's an unusual number of attacks for a state that recorded 25 attacks between 2005 and 2014. Even with the recent incidents, researchers emphasize that sharks are a very low-level threat to humans, compared with other forms of wildlife. Bees, for example, are much more dangerous. And swimming itself is hazardous even without sharks around.

George Burgess, director of the International Shark Attack File at the University of Florida's Florida Museum of Natural History, speculates that several environmental factors could be pushing sharks to congregate in the Outer Banks. It is a warm year, and the water has a higher level of salinity because of a low-level drought in the area. Also, a common species of forage fish — menhaden — has been abundant this year and might have attracted more sharks to the area. Burgess also says some fishermen put bait in the water near piers, which could lure the predators closer to shore; two of the encounters took place within 100 yards of a pier. "That's a formula for shark attacks," Burgess says of these conditions, taken together. "Now, does that explain seven attacks in three weeks? No, it doesn't."
Transportation

Why Electric Vehicles Aren't More Popular 486 486

An anonymous reader writes: Ars takes a look at a recent report from the National Academy of Sciences into the reasons why more people aren't driving electric vehicles. Of course infrastructure issues are a part of it — until charging stations are ubiquitous, the convenience factor for using a gas-powered car will weigh heavily on consumers's minds. (This despite the prevalence of outlets at home and work, where the vast majority of charging will be done even with better infrastructure.) But other reasons are much more tractable. Simply giving somebody experience with an EV tends to make the fog of mystery surrounding them dissipate, and the design of the car counts for a lot, too. It turns out car buyers don't want their EVs to look different from regular cars.
Biotech

3-D Ultrasonic Fingerprint Scanning Could Strengthen Smartphone Security 30 30

Zothecula sends news that researchers from the University of California are developing new fingerprint scanning technology that could one day enhance the security of mobile devices. The new technique scans a fingertip in 3D, capturing the tiny ridges and valleys that make up a fingerprint, as well as the tissue beneath the surface. This guards against attackers unlocking a device with an image of the fingerprint, or by attempting to dust the scanner. The basic concepts behind the researchers’ technology are akin to those of medical ultrasound imaging. They created a tiny ultrasound imager, designed to observe only a shallow layer of tissue near the finger’s surface. "Ultrasound images are collected in the same way that medical ultrasound is conducted," said [Professor David] Horsley. "Transducers on the chip’s surface emit a pulse of ultrasound, and these same transducers receive echoes returning from the ridges and valleys of your fingerprint’s surface." The basis for the ultrasound sensor is an array of MEMS ultrasound devices with highly uniform characteristics, and therefore very similar frequency response characteristics. ... To fabricate their imager, the group employed existing microelectromechanical systems (MEMS) technology, which smartphones rely on for such functions as microphones and directional orientation. They used a modified version of the manufacturing process used to make the MEMS accelerometer and gyroscope found in the iPhone and many other consumer electronics devices.
Medicine

Common Medications Sway Moral Judgment 112 112

sciencehabit sends news that two commonly-prescribed drugs have been shown to influence how the human brain makes moral decisions. Citalopram is an SSRI used to treat depression, and levodopa is often used to combat Parkinson's disease. A new study (abstract) asked subjects to set a monetary value on receiving painful electric shocks — for themselves and for others (e.g. "Would you rather endure seven shocks to earn $10 or 10 shocks to earn $15?"). The study found that subjects on citalopram (which affects serotonin levels) were willing to give up more money to reduce shocks, both for themselves and others. Those on levodopa (which affects dopamine levels) made people just as willing to shock others as they were to shock themselves, when those on a placebo tended to be more reluctant to shock others. [Neuroscientist Molly] Crockett says those effects could suggests multiple underlying mechanisms. For example, excess dopamine might make our brain's reward system more responsive to the prospect of avoiding personal harm. Or it could tamp down our sense of uncertainty about what another person is experiencing, making us less hesitant to dole out pain. Serotonin, meanwhile, appeared to have a more general effect on aversion to harm, not just a heightened concern for another person. Such knowledge could eventually develop drugs that address disorders of social behavior, she says.
ISS

Russian Cargo Ship Successfully Makes Orbit, Will Supply ISS 49 49

An anonymous reader writes: Early this morning, a Russian Soyuz rocket successfully launched from the Baikonur Cosmodrome in Kazakhstan. The rocket carried a Progress capsule containing 2,700kg of supplies for the International Space Station. It's a much-needed victory after a series of launch failures that saw ISS resupply missions from Orbital ATK, Russia, and SpaceX end in failure. "The station, a joint project involving 15 nations which is staffed by a crew of six astronauts and cosmonauts, currently has a four-month supply of food and water, NASA said. The arrival of the Russian cargo ship, and the planned launch of a Japanese HTV freighter in August, should replenish the station's pantries through the end of the year, NASA said. Friday's successful launch clears the way for three new crew members to fly to the station later this month."
Science

The Science of 4th of July Fireworks 40 40

StartsWithABang writes: There are few things as closely associated with American independence as our willingness and eagerness to celebrate with fiery explosions. I refer, of course, to the unique spectacle of fireworks, first developed nearly a millennium ago halfway across the world. But these displays don't happen by themselves; there's an intricate art and science required to deliver the shows we all expect. So what's the science behind fireworks? Here's the physics (and a little chemistry) behind their height, size, shape, color and sound, just in time for July 4th!
Space

Rocket Labs Picks New Zealand For Its Launch Site 60 60

schwit1 writes: The small sat rocket company Rocket Labs has chosen a location in New Zealand as its future launch site. Bloomberg reports: "The company didn't specify how much it was investing in the site, which is due to be completed in the fourth quarter. New Zealand, which has been used in the past by the National Aeronautical and Space Administration, is considered a prime location because rockets launched from that deep in the Southern hemisphere can reach a wide range of Earth orbits. Rocket Lab's remote site on the Kaitorete Spit in the Canterbury region also means it has less air and sea traffic, which translates into more frequent launches and economies of scale, the company said. It also will no longer compete for airspace with the U.S. government." Rocket Labs will have to actually launch something to really make the competition heat up. This announcement, however, illustrates that in the long run, the United States has some significant disadvantages as a spaceport location.
Microsoft

Microsoft Research Open Sources WorldWide Telescope 18 18

kfogel writes: Microsoft Research has open sourced WorldWide Telescope, releasing it under the MIT license and donating the code to the .NET Foundation. The code is up on GitHub at github.com/WorldWideTelescope, and there are demos and more details at WorldWideTelescope.org. Go forth and explore!
Medicine

The Epidemic May be Over, But Liberia Has New Ebola Cases 11 11

Three new cases of Ebola have been reported in Liberia. Reuters reports that despite the declared end to the Ebola outbreak in that country in May, the medical community is speculating that a cluster of infectious carriers somehow survived longer than was previously believed possible, or that there is a previously unknown means of transmission. Health officials "were monitoring 175 people believed to have come into contact with the three cases, though none had yet exhibited symptoms of the disease." The report notes that "A U.S. military operation aimed at helping Liberia's government counter the outbreak has mostly withdrawn. But the Centers for Disease Control and Prevention, a U.S. health body, said it was working with local authorities to study the origin of the cases and stop the virus spreading."
Businesses

Depression: The Secret Struggle Startup Founders Won't Talk About 178 178

mattydread23 writes: In May, Cambrian Genomics CEO Austen Heinz committed suicide. The news stunned friends and family, and sparked a conversation about the growing problem of depression among startup founders. Some estimates say 30% of startup founders suffer from depression, but many are reluctant to talk about their struggle for fear of alienating investors and employees. This feature by Business Insider includes conversations with a friend of Heinz, plus many investors and other startup founders who are starting to talk about the problem and figure out how to make things better.
Space

First Human Colonies Should Be Among Venus' Clouds 250 250

StartsWithABang writes: When we talk about humans existing on worlds other than Earth, the first choice of a planet to do so on is usually Mars, a world that may have been extremely Earth-like for the first billion years of our Solar System or so. Perhaps, with enough ingenuity and resources, we could terraform it to be more like Earth is today. But the most Earth-like conditions in the Solar System don't occur on the surface of Mars, but rather in the high altitudes of Venus' atmosphere, some 50-65 km up. Despite its harsh conditions, this may be the best location for the first human colonies, for a myriad of good, scientific reasons. NASA proposed something similar last year and released a report on the subject.
Education

Pew Survey Documents Gaps Between Public and Scientists 265 265

PvtVoid writes: A new Pew Research Study documents an alarming gap between public perception of scientific issues and the opinions of the scientists themselves, as measured by a poll of AAAS scientists. Even worse, the gap is partisan, with clear differences between Republicans and Democrats, and between conservatives and liberals. For example, while 98% of AAAS members agree with the statement that "Human beings and other living things have evolved over time", only 21% of conservatives agree, compared with 54% of liberals. Global warming, similarly, shows an ideological gap: 98% of AAAS scientists agreed with the statement that "the Earth is getting warmer mostly due to human activity", compared with 21% of conservatives and 54% of liberals. Encouragingly, almost everybody thinks childhood vaccines should be required (86% of AAAS members, 65% of conservatives, and 74% of liberals.) Go here for an interactive view of the data.
NASA

NASA To Waste $150 Million On SLS Engine That Will Be Used Once 138 138

schwit1 writes: NASA's safety panel has noticed that NASA's SLS program either plans to spend $150 million human-rating a rocket engine it will only use once, or will fly a manned mission without human-rating that engine.

"The Block 1 SLS is the 'basic model,' sporting a Delta Cryogenic Second Stage (DCSS), renamed the Interim Cryogenic Propulsion System (ICPS) for SLS. The current plan calls for this [interim] stage to be used on [the unmanned] Exploration Mission -1 (EM-1) and [manned] Exploration Mission -2 (EM-2), prior to moving to the [Exploration Upper Stage] — also to be built by Boeing — that will become the workhorse for SLS. However, using the [interim upper stage] on a crewed mission will require it to be human rated. It is likely NASA will also need to fly the [Exploration Upper Stage] on an unmanned mission to validate the new stage ahead of human missions. This has been presenting NASA with a headache for some time, although it took the recent ASAP meeting to finally confirm those concerns to the public."

NASA doesn't have the funds to human-rate it, and even if they get those funds, human-rating it will likely cause SLS's schedule to slip even more, something NASA fears because they expect the commercial manned ships to be flying sooner and with increasing capability. The contrast — a delayed and unflown and very expensive SLS vs a flying and inexpensive commercial effort — will not do SLS good politically. However, if they are going to insist (properly I think) that SpaceX and Boeing human-rate their capsules and rockets, then NASA is going to have to hold the SLS to the same standard.
The Almighty Buck

Scientist Union's Talks Stall Over Pay 80 80

HughPickens.com writes: The Sacramento Bee reports that the labor contract between California's state government and the 2,800 employees represented by the California Association of Professional Scientists expired this week, spotlighting yet again the long-running feud over whether the tiny union's members should earn as much as their peers in federal and local governments and private industry. "It's a challenge to keep people motivated," says Rita Hypnarowski. "We talk about retaining the best and the brightest, but I can see that's not going to happen." A recent survey by the Brown administration found that the total compensation for half of state-employed chemists is less than $8,985 per month ($5,715 in salary, plus $3,270 in benefit costs). That's 33 percent less than the median total compensation for federal chemists, nearly 13 percent less than the midpoint for local-government chemists and almost 6 percent below the private sector.

Members of the union perform a wide variety of tasks, everything from fighting food-borne illnesses to mopping up the Refugio State Beach oil spill. For example, Cassandra McQuaid left a job last year at the Department of Public Health's state-of-the-art Richmond laboratories where she tracked foodborne illnesses. It's the kind of vital, behind-the-scenes work that goes unnoticed until an E. coli outbreak makes headlines and local health officials need a crack team of scientists to unravel how it happened. "It really came down to money," says McQuaid. "I just couldn't live in the Bay Area on a state salary."
Space

What If You Could See Asteroids In the Night Sky? 54 54

An anonymous reader writes: As part of Asteroid Day a 360-degree video rendering the night sky with the population of near-earth asteroids included has been created by 'Astronogamer' Scott Manley. The video shows how the Earth flies through a cloud of asteroids on its journey around the sun, and yet we've only discovered about 1% of the near earth asteroid population.
Earth

Asteroid Day On June 30 Aims To Raise Awareness of Collision Risks 76 76

benonemusic writes: International organizers--including Queen's Brian May, an astrophysicist--have organized the world's first Asteroid Day on June 30, as a means to raise awareness for future collision risks and encourage actions to minimize the threats from such events. "If we can track the trajectories of asteroids and monitor their movement in our solar system, then we can know if they are on a path to impact Earth," former Apollo astronaut Rusty Schweickart told the organizers of Asteroid Day in a statement. "If we find them early enough, we can move them out of Earth's orbit, thus preventing any kind of major natural disaster."
Biotech

Creating Bacterial "Fight Clubs" To Discover New Drugs 30 30

Science_afficionado writes: Vanderbilt chemists have shown that creating bacterial 'fight clubs' is an effective way to discover natural biomolecules with the properties required for new drugs. They have demonstrated the method by using it to discover a new class of antibiotic with anti-cancer properties. From the Vanderbilt website: "That is the conclusion of a team of Vanderbilt chemists who have been exploring ways to get bacteria to produce biologically active chemicals which they normally hold in reserve. These compounds are called secondary metabolites. They are designed to protect their bacterial host and attack its enemies, so they often have the right kind of activity to serve as the basis for effective new drugs. In fact, many antibiotics and anticancer compounds in clinical use are either secondary metabolites or their derivatives."
Transportation

Airplane Coatings Help Recoup Fuel Efficiency Lost To Bug Splatter 117 117

MTorrice writes: When bugs hit the wings of oncoming airplanes, they create a problem. Their blood, called hemolymph, sticks to an airplane's wings, disrupting the smooth airflow over them and reducing the aircraft's fuel efficiency. To fight the problem, NASA is working on developing a coating that could help aircraft repel bug remains during flight. After experimenting with almost 200 different formulations, researchers recently flight-tested a few promising candidates. Results showed that they could reduce the amount of stuck bug guts on the wings by up to 40%. With further optimization, NASA says such coatings could allow planes to use 5% less fuel.
Space

The Underfunded, Disorganized Plan To Save Earth From the Next Giant Asteroid 88 88

New submitter citadrianne sends a story about the beginnings of our asteroid defense efforts, and how initial concern over an asteroid strike wasn't sustained long enough to establish consistent funding: Until a few decades ago, the powers that be didn't take the threat of asteroids very seriously. This changed on March 23, 1989, when an asteroid 300 meters in diameter called 1989FC passed within half a million miles of Earth. As the New York Times put it, "In cosmic terms, it was a close call." After this arguably close brush with total annihilation, Congress asked NASA to prepare a report on the threat posed by asteroids. The 1992 document, "The Spaceguard Survey: Report of the NASA International Near-Earth-Object Detection Workshop," was, suffice it to say, rather bleak.

If a large NEO were to hit Earth, the report said, its denizens could look forward to acid rain, firestorms, and an impact winter induced by dust being thrown miles into the stratosphere. ... After reports from the National Research Council made it clear that meeting the discovery requirement outlined in the Congressional mandate was impossible given the lack of program funding, NEOO got a tenfold budget increase from 2009 to 2014. Yet it still faces a number of difficulties. A program audit released last September described the NEOO program as a one-man operation that is poorly integrated and lacking in objectives and oversight.
Medicine

Pass the Doritos, Scientists Develop Computer Game Targeted At Healthy Choices 81 81

MojoKid writes: Psychologists at the University of Exeter and Cardiff University have published a study that demonstrates how a simple computer game can help people lose weight. Participants in the study who played the specialized game lost and average of 1.5 pounds in the first seven days, and 4.5 pounds after six months. They also reduced their daily caloric consumption by 220 calories. Dr. Natalia Lawrence led the team of researchers that developed the computer game for the study. It was designed to train people to resist unhealthy food snack foods through a "stop versus go" process. Participants sat in front of a Pentium 3 PC running Matlab software on a 17-inch monitor. They were then instructed to press certain keys when images of things like fruits and clothes would appear, indicating a "go." But for images of calorie-dense foods (chips and cake, for example) they were instructed not to do anything, indicating a "stop" action.