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Tópico: Curiosidades Científicas

  1. #961
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    New zinc battery competes with lithium-ion
    A new way to put the zinc together makes this safer chemistry an option.

    https://arstechnica.com/science/2017...rechargeables/
    Today, even US water is overly medicated—these scientists want to change that
    With billions of US meds, algae, fish, and insects getting high on contaminated sewage.

    https://arstechnica.com/science/2017...ur-ecosystems/
    Scientists Find New Hurdles in Accessing Old Data from Archaic Media

    The biggest hurdle is sometimes not technological but human, digital archivists say. It's not enough to extract a file just to learn that it has 6 columns and 100,000 rows; researchers need to know what the numbers mean. Archivists led by Amy Pienta at the Interuniversity Consortium for Political and Social Research in Ann Arbor, Michigan, for instance, bought a refurbished punch-card reader to retrieve data from a large, longitudinal study of retirement from the 1950s. But after physical punches were converted to ASCII numeric codes, they needed preserved codebooks to know what the numbers referred to — did a code of '1' mean yes or no?
    https://www.hardocp.com/news/2017/05..._archaic_media
    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. #962
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    New device can harvest indoor light to power electronics
    The low intensity of light indoors suits this hardware just fine.

    https://arstechnica.com/science/2017...onics-indoors/
    This is what you’re drinking if you swallow sea water
    Avoid the fish eggs



    These photos may look like a child’s drawings (or the wedding dress of a certain celebrity) but it’s actually seawater magnified 25 times.

    https://www.theverge.com/2017/5/6/15...ger-photograph
    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. #963
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    In the Arctic, carbon dioxide goes down where methane comes up
    Surprisingly, CO2 removal by plankton counteracts methane emissions.

    https://arstechnica.com/science/2017...hane-comes-up/
    History of the Entire World, I Guess could have been the best online video of 2005



    https://www.theverge.com/tldr/2017/5...rtz-watch-this
    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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  4. #964
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    Learning the rules of antibiotics to make old drugs work on new bugs
    A newly developed list of criteria may aid in finding and making effective drugs.
    ...
    We are desperately in need not only of new antibiotics, but of new types of antibiotics. The last new class of antibiotics effective against Gram-negative bacteria—including bacteria that cause Whooping cough, Legionnaire’s disease, typhoid fever, and bubonic plague—was last introduced in 1968. And this is not for lack of trying. In 2007, GlaxoSmithKline reported screening 500,000 compounds for activity against E. coli and came up with a grand total of none.
    ...
    https://arstechnica.com/science/2017...k-on-new-bugs/
    Dangerous shortage of essential antibiotics is all about $$
    Old drugs don’t make money, but are better for patients and fight drug resistance.

    An international group of doctors and researchers is raising the alarm this week over the growing scarcity of old, essential antibiotics—a shortage spurred largely by money.

    https://arstechnica.com/science/2017...-is-all-about/
    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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  5. #965
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    This Pacific island is covered in 38 million pieces of trash — mostly plastic
    Hundreds of purple hermit crabs now make their homes in plastic containers

    https://www.theverge.com/2017/5/16/1...rash-pollution
    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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  6. #966
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    Wi-Fi router used to make hologram
    Wi-Fi transmitter used to create hologram, potentially sees through walls.

    https://arstechnica.com/science/2017...make-hologram/
    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. #967
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    Check Out These Incredibly High Resolution Maps of the Ocean Floor



    “We know more about some other planets than about a lot of the areas of our own planet’s sea floor,” BOEM geologist Kody Kramer told Gizmodo.

    http://gizmodo.com/check-out-these-i...the-1795516424
    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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  8. #968
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    Quack trial to resurrect brain-dead folks revived with new location
    After getting shut down in India last year, US-based company announces new plans.

    Indian authorities last year pulled the plug on a dubious clinical trial aiming to reverse brain death in 20 people. But, it seems, the resolve of the trial’s leaders is undying. They have revived their plans and will announce a new trial in upcoming months that will take place somewhere in Latin America, Stat reports.

    https://arstechnica.com/science/2017...-new-location/
    Ultra-tough antibiotic to fight superbugs
    ...
    It fights bacteria in three different ways, making it much less likely that the bugs can dodge the attack.
    ...
    http://www.bbc.com/news/health-40091179
    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. #969
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    Houve crianças que morreram no sudão do sul ao tomarem vacinas deesse tipo por terem passado de prazo . íncrivel. Oxalá façam melhor e mais barato para todos.

  10. #970
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    Astronomers saw one star warp another’s light in a way that Einstein thought we’d never see
    A white dwarf made it seem like another star shifted its position in the sky



    https://www.theverge.com/2017/6/7/15...ein-relativity
    Einstein still annoyingly right as researchers weigh white dwarf
    Manage an experiment of which Einstein himself said “there is no hope.”

    https://arstechnica.com/science/2017...h-white-dwarf/
    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. #971
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    Resurrecting extinct species comes with legal issues
    De-extincted species could fall under endangered species rules or GMOs regulations.

    https://arstechnica.com/science/2017...t-be-patented/
    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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  12. #972
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    vai dar cagada

  13. #973
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    When flatworms go to space, they grow two heads
    It sounds like a bad science fiction movie, but that’s just how space flatworms roll.

    https://arstechnica.com/science/2017...row-two-heads/
    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. #974
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    Chinese scientists have built the first quantum satellite network
    ‘This proves the feasibility of quantum communications from space’
    ...
    Launched in August, the satellite uses a crystal to produce pairs of entangled photons in orbit. The photons are then transmitted down to base stations in China, traveling as much as 2,400 km through space.
    ...
    https://www.theverge.com/2017/6/15/1...glement-micius
    Quantum principle harnessed to create easier wireless charging
    Classical version of a quantum system lets power flow across large air gaps.
    ...
    Now, researchers at Stanford have found a different way to handle wireless charging. Taking advantage of a quantum principle that also applies to the everyday world, they've created a system in which power is transferred over a wider distance with roughly 100-percent efficiency. Better still, the system adjusts itself to the distance, so careful frequency tuning becomes unnecessary. The big downside, however, is that the supporting electronics aren't especially efficient.
    ...
    https://arstechnica.com/science/2017...less-charging/
    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. #975
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    Head Transplant Scientists Re-Attach Rat Spines, Others Not Convinced

    Sergio Canavero wants to transplant a head, and we can’t look away. Despite our continued skepticism, he does seem to be making progress. “Seem” being the operative word here, because others still aren’t convinced by the evidence.

    http://gizmodo.com/head-transplant-s...ers-1796127524
    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. #976
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    Só vendo também, contado não acredito.

  17. #977
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    Goat testicles in men, human organs in pigs: the past and future of xenotransplantation
    The road to growing organs in pigs is paved with ethical questions

    https://www.theverge.com/2017/6/16/1...tage-bioethics
    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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