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Tópico: Curiosidades Científicas

  1. #1041
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    Deadly superbug just got scarier—it can mysteriously thwart last-resort drug
    It's the first time researchers have seen colistin-heteroresistant germs in the US.

    https://arstechnica.com/science/2018...dont-know-how/
    A Team of 50 Engineers Spent 6 Months Making a Fidget Spinner

    Mitsubishi Precision Co Ltd. designed and built a fidget spinner based on MinebeaMitsumi Inc.'s ball bearings to break the Guinness world record for "Longest duration spinning a fidget spinner on one finger." The team of 50 people spent 6 months creating and perfecting the design, with a heavy brass outer ring, and a lightweight aluminum center section, which spun for 24 min 46.34 sec.



    https://www.hardocp.com/news/2018/03...fidget_spinner
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  2. #1042
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    Stephen Hawking, legendary theoretical physicist, dies at 76
    Hawking's family: "He was a great scientist and an extraordinary man."

    https://arstechnica.com/science/2018...st-dies-at-76/
    Pioneering physicist Stephen Hawking dies at 76

    https://www.theverge.com/2018/3/14/1...n-hawking-dies
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  3. #1043
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    Doctors shocked by 3.5-inch air bubble where part of man’s brain should be
    The man was generally well and declined surgery to release the air, citing risks.



    https://arstechnica.com/science/2018...ain-should-be/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  4. #1044

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    Esse gajo é um cabeça de vento... Literalmente

  5. #1045
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    ahaahh...mesmo

  6. #1046
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    How Stephen Hawking’s biggest achievement linked opposing worlds of physics
    Hawking radiation was a big step in bringing together quantum mechanics and relativity
    ...
    His work connected two conflicting concepts in theoretical physics: quantum mechanics and the theory of relativity. “Those are the two pillars on which physics now rests, but they’re really quite incompatible to one another,” Raphael Bousso, a theoretical physicist at UC Berkely who was once a student of Hawking’s, tells The Verge.
    ...
    https://www.theverge.com/2018/3/15/1...ral-relativity
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  7. #1047
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    Vai fazer uma falta descomunal

  8. #1048
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    Virus fished from pond cures man’s deadly antibiotic-resistant infection
    The clinical success suggests promising strategy for fighting antibiotic resistance.

    In 2012, a 76-year-old Connecticut doctor had surgery to repair a life-threatening bulge in his aortic arch—the hulking bend that hooks the massive artery around the heart, routing oxygenated blood both upward and downward. Surgeons successfully used a synthetic graft to shore up the vital conduit. But soon after, a tenacious film of drug-resistant Pseudomonas aeruginosa bacteria formed on the graft.

    The doctor spent the next four years battling the infection, slipping in and out of the hospital. His surgeons and doctors at Yale deemed him too high risk for another operation and put him on mega-doses of antibiotics, prescribed indefinitely. The drugs couldn’t clear the infection, they merely knocked it back enough to keep it from killing him. But the chronic inflammation that ensued took its own toll. His team of doctors started to worry his immune system was chipping away at his aorta. With a bleak outlook, the man agreed in 2016 to an experimental treatment: a virus that researchers had fished out of a nearby pond.

    The viral gamble paid off. The infection cleared and he went off antibiotics, according to a case study published recently by the Yale researchers and doctors in the journal of Evolution, Medicine, and Public Health.

    https://arstechnica.com/science/2018...ved-mans-life/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  9. #1049
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    New lithium-air battery survives hundreds of cycles
    Reaction with CO₂ gives lithium a protective coat that holds up to oxygen.
    ...
    With far fewer chemicals permanently inside the battery, it's possible to achieve a much higher energy density—there have been demonstrations of lithium-air batteries with an energy density five times that of current lithium-ion tech. The only drawback? They have a lifespan of about a month, in part because both oxygen and metallic lithium are pretty reactive and in part because air offers a lot of things other than oxygen that can react.

    Now, a team of researchers has figured out a way to protect against many of these reactions and showed that the resulting battery can survive hundreds of charge/discharge cycles in an air-like atmosphere. Which probably means the researchers are ready to figure out what goes wrong when this material meets actual air. The hope is that will be an easier issue to solve.
    ...
    https://arstechnica.com/science/2018...eds-of-cycles/
    Best bad idea ever? Why Putin’s nuclear-powered missile is possible… and awful
    Nuclear-powered cruise missiles? The US worked on them in the 1950s.
    ...
    Defense and nuclear disarmament experts did a double take. "I'm still kind of in shock," Edward Geist, a Rand Corporation researcher specializing in Russia, told NPR. "My guess is they're not bluffing, that they've flight-tested this thing. But that's incredible."
    ...
    https://arstechnica.com/science/2018...ble-and-awful/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  10. #1050
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    Network of fortified towns indicates Amazon was once heavily populated
    Dozens of new sites offer new insights on pre-Columbian earth-builders.
    ...
    Today we think of the Amazon as a pristine rainforest, sparsely populated by indigenous communities. But in records from the 1500s, Spanish colonizers describe a densely populated region, crisscrossed by canals and sunken roads and dotted with bustling, fortified towns. Unfortunately, fortification couldn’t protect the towns’ inhabitants against European diseases, which devastated South American indigenous populations and left the fortified villages abandoned.
    ...
    https://arstechnica.com/science/2018...ily-populated/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  11. #1051
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    Lockheed Martin Now Has a Patent For Its Potentially World Changing Fusion Reactor
    When it first announced the project, the company said it could have a working prototype of the revolutionary power source as early as 2019.

    http://www.thedrive.com/the-war-zone...fusion-reactor
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  12. #1052
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    Hot-air dryers suck in nasty bathroom bacteria and shoot them at your hands
    Air filters can help, but healthcare and research centers may want to stick with towels.

    https://arstechnica.com/science/2018...at-your-hands/
    Researchers May Have Found How Birds Use Magnetoreception To Navigate Themselves – Robins And Zebra Finches Study Could Be The Answer

    We have finally solved the mystery about how birds navigate. It was originally believed that the iron in their beaks provide a magnetic compass. Scientists found out that this is not actually true. They discovered a protein in the eyes of the birds that allows them to see the Earth’s magnetic fields.

    https://wccftech.com/researchers-bir...netoreception/
    Mysterious sunstones in medieval Viking texts could really have worked
    A new study says Vikings could have used these stones to navigate to Greenland.

    https://arstechnica.com/science/2018...y-have-worked/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  13. #1053
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    Three years of staring lets scientists capture a neutron star “glitch”
    For a fraction of a second, a pulsar stopped pulsing.

    https://arstechnica.com/science/2018...ath-its-crust/
    "High Definition Vinyl" Coming as Early As Next Year

    In a follow up to a 2016 European patent that described a new way of manufacturing vinyl records that would allow them higher audio fidelity, louder volume, and longer playing times.

    https://www.hardocp.com/news/2018/04...arly_next_year
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  14. #1054
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    Meteorite’s diamonds tell of Earth’s baby sister, which died young
    They may be from a Mercury-sized body obliterated during Solar System formation.

    https://arstechnica.com/science/2018...ch-died-young/
    Despite alien theories and novel mutations, the real Ata puzzle may be ethical
    A genomic study proved Ata is human, but now the study's ethics are in question.

    https://arstechnica.com/science/2018...ons-to-ethics/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  15. #1055
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    Genealogy websites identify rape suspect who eluded police for 40 years
    Match came after finding relatives' DNA on commercial service, news reports say.

    https://arstechnica.com/tech-policy/...-for-40-years/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  16. #1056
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    Russia launched a floating nuclear power plant this weekend
    Two nuclear reactors will provide power to an oil town off Russia's eastern coast.

    https://arstechnica.com/science/2018...-this-weekend/
    Human brain cells can make complex structures in a dish—is this a problem?
    Now's the time to start thinking about the ethics of building neural tissues.

    https://arstechnica.com/science/2018...n-brain-cells/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  17. #1057
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    Imaging Tech Developed for NASA Finds Hidden Script in Dead Sea Scrolls

    Researchers have begun using imaging tech originally developed for NASA to examine fragments of the Dead Sea Scrolls and found that some of the fragments contain a hidden script that wasn't visible to the naked eye. The imaging technique resulted in the discovery of new letters and words and may even indicate the existence of additional manuscripts. Also, the imaging software is a godsend for researchers because it allows them to digitize the fragments and cut down on handling of these fragile fragments.

    https://www.hardocp.com/news/2018/05...ad_sea_scrolls
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  18. #1058
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    Alan Turing’s chemistry hypothesis turned into a desalination filter
    A chemical reaction he suggested can now be done, and it makes a great membrane.

    It took us decades to figure out how to actually implement Turing's ideas about chemistry, but we've managed to create a number of reactions that display the behaviors he described. And now, a team of Chinese researchers has figured out how to use them to make something practical: a highly efficient desalination membrane.

    https://arstechnica.com/science/2018...er-salt-water/
    How scientists are engineering silk to save our bodies
    It’s strong, stretchy, and compatible with the human body

    Silk is made by silkworms for their cocoons and by spiders for their webs. The two kinds are spun differently and have some different properties. (For example, the silk made by worms tends to be weaker). But in both cases, the material is strong, stretchy, and safe to use inside the human body — which opens it up to a wide range of medical uses.

    https://www.theverge.com/2018/5/4/17...ering-strength
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  19. #1059
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    The material science of building a light sail to take us to Alpha Centauri
    We're unsure about the best material and don't have the measurements to know.

    https://arstechnica.com/science/2018...lpha-centauri/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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  20. #1060
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    How one man’s death led to the extinction of a butterfly population
    A complicated mix of an invasive species, a cattle ranch, and evolution.

    https://arstechnica.com/science/2018...ly-population/
    Supercomputers are driving a revolution in hurricane forecasting
    Five-day forecasts are as good now as two-day forecasts were in 1998.

    https://arstechnica.com/science/2018...last-20-years/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
    E nós aqui sem parar numa Terra a girar…


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