DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 internet speed test! ×

World's Largest Dinosaur Footprints Discovered In Western Australia ( 35

An anonymous reader quotes a report from The Guardian: The largest known dinosaur footprints have been discovered in Western Australia, including 1.7 meter prints left by gigantic herbivores. Until now, the biggest known dinosaur footprint was a 106cm track discovered in the Mongolian desert and reported last year. At the new site, along the Kimberley shoreline in a remote region of Western Australia, paleontologists discovered a rich collection of dinosaur footprints in the sandstone rock, many of which are only visible at low tide. The prints, belonging to about 21 different types of dinosaur, are also thought to be the most diverse collection of prints in the world. Steve Salisbury, a vertebrate paleontologist at the University of Queensland told ABC News: "We've got several tracks up in that area that are about 1.7 meters long. So most people would be able to fit inside tracks that big, and they indicate animals that are probably around 5.3 to 5.5 meters at the hip, which is enormous." "It is extremely significant, forming the primary record of non-avian dinosaurs in the western half the continent and providing the only glimpse of Australia's dinosaur fauna during the first half of the early Cretaceous period," he said. The findings were reported in the Memoir of the Society of Vertebrate Paleontology. The largest tracks belonged to sauropods, huge Diplodocus-like herbivores with long necks and tails. The scientists also discovered tracks from about four different types of ornithopod dinosaurs (two-legged herbivores) and six types of armored dinosaurs, including Stegosaurs, which had not previously been seen in Australia. At the time the prints were left, 130m years ago, the area was a large river delta and dinosaurs would have traversed wet sandy areas between surrounding forests.

NASA Launches Massive Digital Library For Space Video, Photos and Audio ( 33

earlytime quotes a report from NASA on Tuesday (March 28) unveiled a new online library that assembles the agency's amazing space photos, videos and audio files into a single searchable library. The NASA Image and Video Library, as the agency calls it, can be found at and consolidates space imagery from 60 different collections into one location. The new database allows users to embed NASA imagery in websites, includes image metadata like date, description and keywords, and offers multiple resolution sizes, NASA officials said. According to the NASA statement, other features include: Automatic scaling to suite the interface for mobile phones and tablets; EXIF/camera data that includes exposure, lens used and other information (when available from the original image); Easy public access to high resolution files; Downloadable caption files for all videos. The new NASA archive is not meant to be a complete archive of all of the space agency imagery. But it does aim to showcase what the space agency has to offer.

Scientists Turn Mammalian Cells Into Complex Biocomputers ( 27

sciencehabit quotes a report from Science Magazine: Computer hardware is getting a softer side. A research team has come up with a way of genetically engineering the DNA of mammalian cells to carry out complex computations, in effect turning the cells into biocomputers. The group hasn't put those modified cells to work in useful ways yet, but down the road researchers hope the new programming techniques will help improve everything from cancer therapy to on-demand tissues that can replace worn-out body parts. To upgrade their DNA "switches," Wong and his colleagues steered clear of transcription factors and instead switched human kidney cell genes on and off using scissor-like enzymes that selectively cut out snippets of DNA. These enzymes, known as DNA recombinases, recognize two target stretches of DNA, each between 30 to 50 or more base pairs long. When a recombinase finds its target DNA stretches, it cuts out any DNA in between, and stitches the severed ends of the double helix back together. To design genetic circuits, Wong and his colleagues use the conventional cellular machinery that reads out a cell's DNA, transcribes its genes into RNA, and then translates the RNA into proteins. This normal gene-to-protein operation is initiated by another DNA snippet, a promoter, that sits just upstream of a gene. When a promoter is activated, a molecule called RNA polymerase gets to work, marching down the DNA strand and producing an RNA until it reaches another DNA snippet -- a termination sequence -- that tells it to stop. To make one of their simplest circuits, Wong's team inserted four extra snippets of DNA after a promoter. The main one produced green fluorescent protein (GFP), which lights up cells when it is produced. But in front of it was a termination sequence, flanked by two snippets that signaled the DNA recombinase. Wong and his team then inserted another gene in the same cell that made a modified recombinase, activated only when bound to a specific drug; without it, the recombinase wouldn't cut the DNA. When the promoter upstream of the GFP gene was activated, the RNA polymerase ran headfirst into the termination sequence, stopped reading the DNA, and didn't produce the fluorescent protein. But when the drug was added, the recombinase switched on and spliced out the termination sequence that was preventing the RNA polymerase from initiating production of GFP. Voila, the cell lit up. The approach Wong and his colleagues used worked so well that they were able to build 113 different circuits, with a 96.5% success rate. The study has been published in the journal Nature.

'Sightings' of Extinct Tasmanian Tiger Prompt Search in Queensland ( 75

Elle Hunt, writing for The Guardian: "Plausible" possible sightings of a Tasmanian tiger in northern Queensland have prompted scientists to undertake a search for the species thought to have died out more than 80 years ago. The last thylacine is thought to have died in Hobart zoo in 1936, and it is widely believed to have become extinct on mainland Australia at least 2,000 years ago. But sightings of large, dog-like animals that are neither dingoes nor foxes have persisted over the decades, despite widespread scepticism. Recent eyewitness accounts of potential thylacines in far north Queensland have spurred scientists from James Cook University to launch a search for the animal long considered extinct. Professor Bill Laurance said he had spoken at length to two people about animals they had seen in Cape York peninsula that could potentially be thylacines, and that they had given plausible and detailed descriptions.

Evidence That Robots Are Winning the Race for American Jobs ( 346

Who is winning the race for jobs between robots and humans? Last year, two leading economists described a future in which humans come out ahead. But now they've declared a different winner: the robots. From a report on the New York Times: The industry most affected by automation is manufacturing. For every robot per thousand workers, up to six workers lost their jobs and wages fell by as much as three-fourths of a percent, according to a new paper by the economists, Daron Acemoglu of M.I.T. and Pascual Restrepo of Boston University. It appears to be the first study to quantify large, direct, negative effects of robots. The paper is all the more significant because the researchers, whose work is highly regarded in their field, had been more sanguine about the effect of technology on jobs. In a paper last year, they said it was likely that increased automation would create new, better jobs, so employment and wages would eventually return to their previous levels. Just as cranes replaced dockworkers but created related jobs for engineers and financiers, the theory goes, new technology has created new jobs for software developers and data analysts. From a report on The Verge, which looks at another finding in the study: They found that each new robot added to the workforce meant the loss of between 3 and 5.6 jobs in the local commuting area. Meanwhile, for each new robot added per 1,000 workers, wages in the surrounding area would fall between 0.25 and 0.5 percent.

Dutch Scientist Proposes Circular Runways For Airport Efficiency ( 315

An anonymous reader quotes a report from Fast Company: While airport terminal architecture has a solid history of style and innovation, rarely is a proposal put forth to utterly redesign the runway. But that's precisely the aim of Henk Hesselink, a Dutch scientist working with the Netherlands Aerospace Center. Dubbed the "endless runway," Hesselink's brainchild is a 360-degree landing strip measuring more than two miles in diameter. Since airplanes would be able to approach and take off from any direction around the proposed circle, they wouldn't have to fight against crosswinds. And three planes would be able to take off or land at the same time. Hesselink's team uses flight simulators and computerized calculations to test the unconventional design, and have determined that round airports would be more efficient than existing layouts. With a central terminal, the airport would only use about a third of the land of the typical airport with the same airplane capacity. And there's an added benefit to those living near airports: Flight paths could be more distributed, and thereby making plane noise more tolerable. BBC produced a video detailing Hesselink's circular runway concept. The concept is fascinating but there are many questions the video does not answer. Phil Derner Jr. from NYC Aviation writes via Business Insider about some of those unanswered questions in his article titled "Why the circular runway concept wouldn't work." The fundamental issues discussed in his report include banked runway issues, curved runway issues, navigation issues, and airspace issues. What do you think of Hesselink's concept? Do you think it is preposterous or shows promise?

NASA Spends 72 Cents of Every SLS Dollar On Overhead Costs, Says Report ( 159

A new report published by the nonpartisan think tank Center for a New American Security shows us where a lot of NASA's money is being spent. The space agency has reportedly spent $19 billion on rockets -- first on Ares I and V, and now on the Space Launch System rocket -- and $13.9 billion on the Orion spacecraft. If all goes according to plan and NASA is able to fly its first crewed mission with the new vehicles in 2021, "the report estimates the agency will have spent $43 billion before that first flight, essentially a reprise of the Apollo 8 mission around the Moon," reports Ars Technica. "Just the development effort for SLS and Orion, which includes none of the expenses related to in-space activities or landing anywhere, are already nearly half that of the Apollo program." From the report: The new report argues that, given these high costs, NASA should turn over the construction of rockets and spacecraft to the private sector. It buttresses this argument with a remarkable claim about the "overhead" costs associated with the NASA-led programs. These costs entail the administration, management, and development costs paid directly to the space agency -- rather than funds spend on contractors actually building the space hardware. For Orion, according to the report, approximately 56 percent of the program's cost, has gone to NASA instead of the main contractor, Lockheed Martin, and others. For the SLS rocket and its predecessors, the estimated fraction of NASA-related costs is higher -- 72 percent. This means that only about $7 billion of the rocket's $19 billion has gone to the private sector companies, Boeing, Orbital ATK, Aeroject Rocketdyne, and others cutting metal. By comparison the report also estimates NASA's overhead costs for the commercial cargo and crew programs, in which SpaceX, Boeing, and Orbital ATK are developing and providing cargo and astronaut delivery systems for the International Space Station. With these programs, NASA has ceded some control to the private companies, allowing them to retain ownership of the vehicles and design them with other customers in mind as well. With such fixed-price contracts, the NASA overhead costs for these programs is just 14 percent, the report finds.

Climate Change Is Altering Global Air Currents ( 330

An anonymous reader quotes a report from The Independent: One of the scientists who demonstrated conclusively that global warming was an unnatural event with the famous "hockey stick" graph is now warning that giant jetstreams which circle the planet are being altered by climate change. Jetstreams are influenced by the difference in temperatures between the Arctic and the equator. But the Arctic has been warming much faster than tropical climates -- the island of Svalbard, for example was 6.5 degrees celsius warmer last year compared to the average between 1961 and 1990. The land has also been warming faster than the sea. Both of those factors were changing the flow of these major air currents to create "extreme meanders" which were helping to cause "extreme weather events", Professor Michael Mann said. In a paper in the journal Scientific Reports, Professor Mann and other researchers wrote that evidence of the effect of climate change on the jetstreams had "only recently emerged from the background noise of natural variability." They said that projections of the effect on the jetstreams in "state-of-the-art" climate models were "mirrored" in "multiple" actual temperature measurements. The jetstream normally flows reasonably consistently around the planet, but can develop loops extending north and south. The researchers, who studied temperature records going back to 1870 as well as satellite data, said these loops could grow "very large" or even "grind to a halt" rather than moving from west to east. The effect has been most pronounced during the past 40 years, they found.

Elon Musk Launches Neuralink To Connect Brains With Computers ( 116

At Recode's conference last year, Elon Musk said he would love to see someone do something about linking human brains with computers. With no other human being volunteering, Mr. Musk -- who founded PayPal and OpenAI, thought of Hyperloop, is working on a boring company, and runs SpaceX, TeslaX, SolarCity -- is now working on it. From a report on WSJ: Internal sources tell the WSJ that the company, called Neuralink, is developing "neural lace" technology that would allow people to communicate directly with machines without going through a physical interface. Neural lace involves implanting electrodes in the brain so people could upload or download their thoughts to or from a computer, according to the WSJ report. The product could allow humans to achieve higher levels of cognitive function. From WSJ's report (paywalled): The founder and chief executive of Tesla and Space Exploration Technologies Corp.has launched another company called Neuralink Corp., according to people familiar with the matter. Neuralink is pursuing what Mr. Musk calls "neural lace" technology, implanting tiny brain electrodes that may one day upload and download thoughts. Mr. Musk didn't respond to a request for comment. Max Hodak, who said he is a "member of the founding team," confirmed the company's existence and Mr. Musk's involvement.

No One Knows What To Do With the International Space Station ( 232

An anonymous reader shares a report: In 2024 the clock will run out on the International Space Station. Maybe. That's the arbitrary deadline that Congress imposed back in 2014, at which point they'll have to decide whether or not to keep funding the ISS. And yeah, that's a whole seven years away. But then's only seven years away. The ISS takes up half of NASA's human exploration budget -- half of the pile of money allotted for things like sending humans to Mars or to an asteroid. And if they want to push further into space exploration, NASA can't keep sinking three to four billion dollars a year into the ISS. Not that it's really their decision. Congress -- specifically the House Committee on Science, Space, and Technology -- decides how much money NASA will get. And because politicians aren't experts in space travel, they keep holding hearings to discuss what they could possibly do with the ISS in seven years' time. Let private industry take it over? Let it crash and burn into the South Pacific? Let the program keep running? The latest hearing took place last week. These are hard questions, in part because people have very different opinions on what's valuable about NASA, and therefore about whether the ISS is still useful. Maybe you think that NASA should really be about exploration, about pushing the boundaries of what we know and where we can travel. In that case, the ISS might not be your first priority. That's a huge chunk of the budget that goes toward bringing things back and forth to low Earth orbit instead of venturing to other planets.

Researchers Discover A Surprising New Role for Lungs: Making Blood ( 59

schwit1 quotes ScienceAlert: In experiments involving mice, the team found that lungs produce more than 10 million platelets (tiny blood cells) per hour, equating to the majority of platelets in the animals' circulation. This goes against the decades-long assumption that bone marrow produces all of our blood components. Researchers from the University of California, San Francisco also discovered a previously unknown pool of blood stem cells that makes this happen inside the lung tissue -- cells that were incorrectly assumed to mainly reside in bone marrow. "This finding definitely suggests a more sophisticated view of the lungs -- that they're not just for respiration, but also a key partner in formation of crucial aspects of the blood," says one of the researchers, Mark R. Looney.
The platelet-producing cells actually migrate from the bone marrow to the lungs.

17-Year-Old Corrects NASA Mistake In Data From The ISS ( 79

"A British teenager has contacted scientists at NASA to point out an error in a set of their own data," writes the BBC. An anonymous reader quotes their report. A-level student Miles Soloman found that radiation sensors on the International Space Station (ISS) were recording false data... The correction was said to be "appreciated" by NASA, which invited him to help analyse the problem... The research was part of the TimPix project from the Institute for Research in Schools (IRIS), which gives students across the UK the chance to work on data from the space station, looking for anomalies and patterns that might lead to further discoveries. What Miles had noticed was that when nothing hit the detector, a negative reading was being recorded. But you cannot get negative energy... It turned out that Miles had noticed something no-one else had -- including the NASA experts. NASA said it was aware of the error, but believed it was only happening once or twice a year. Miles had found it was actually happening multiple times a day.
There's a video of the student -- and his teacher -- describing the discovery, a story which Miles says his friends at high school listen to with "a mixture of jealousy and boredom"

Theranos To Investors: Please Don't Sue! Here, Have Some More Shares ( 86

Theranos "plans to give additional shares to investors who pledge not to sue," reports the Wall Street Journal. An anonymous reader quotes Silicon Beat: The deal, which hasn't been disclosed publicly, was approved by the Palo Alto-based company's board last month, The Wall Street Journal reported, citing anonymous "people familiar with the matter." They said most investors have tentatively agreed to the deal. Those extra shares are coming from none other than founder and CEO Elizabeth Holmes' personal cache, the Journal reported. That means the beleaguered founder, who has remained stubbornly at the helm of her struggling startup even though federal regulators have barred her from running a medical lab for two years, would give up her majority ownership in the company.

Scientists Name 11 New Cloud Types ( 28

The increased use of technology capable of photographing and sharing images has prompted the World Meteorological Organization to add 11 new cloud classifications to their International Cloud Atlas. "A far cry from simple white puffs, these 11 new cloud types roll, dip, and menace their way across the skies," reports National Geographic. From the report: These 11 additions are the first updates that the atlas has received in 30 years, and much of the change can be attributed to citizen scientists who can share and discuss clouds by uploading photos to the Atlas's site. 2017 is the first year that the renowned atlas will be published entirely online, but a hardbound version will follow later this year. Asperitas, Latin for roughness, is the cloud type that has citizen scientists most excited and has been a special victory for the UK-based Cloud Appreciation Society. This photo, first spotted in 2006, captured their attention for its inability to be described by existing cloud types. Marked by small divot-like features that create chaotic ripples across the sky, asperitas were championed by enthusiasts who noticed they did not accurately fall under existing categories. Other clouds that formerly went by more colloquial names, such as the wave-like Kelvin-Helmoltz cloud, and fallstreak holes, will now be recognized with the Latin names fluctus and cavum, respectively. You can watch a time-lapse of the newly classified asperitas here.

Supermassive Black Hole Rocketing Out of Distant Galaxy At 5 Million MPH ( 80

The Bad Astronomer writes: Astronomers have found a supermassive black hole barreling out of its home galaxy at 5 million miles per hour. The 3 billion solar mass behemoth formed from the merger of two slightly smaller black holes after two galaxies collided and themselves merged. The resulting blast of gravitational waves is thought to have been asymmetric, causing a rocket effect which launched the resulting black hole away. It's currently 40,000 light years from the galaxy's core. Source: ESA/Hubble

Slashdot Top Deals