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Tópico: Curiosidades Científicas

  1. #981
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    The strange and righteous history of the equals sign
    500 years ago, tragic Welsh genius Robert Recorde wanted to teach math to ordinary people.

    =

    https://arstechnica.com/science/2017...ged-the-world/
    Resurrecting an extinct relative of smallpox could pave the way for better vaccines
    Or biowarfare

    Scientists have resurrected a long-extinct virus closely related to smallpox, and all it took was $100,000 and some mail-ordered chunks of DNA. The research, reported as news in the journal Science, could provide a road map to reconstructing the genome for one of the deadliest viruses the world has ever seen. And some scientists fear the information could help terrorists create dangerous biological weapons.

    https://www.theverge.com/2017/7/7/15...ines-bioweapon
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  2. #982
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    The first teleportation of information, into space, using quantum entanglement just happened

    A Chinese research team, led by professor Chao-Yang Lu from the University of Science and Technology of China, have managed to teleport a piece of quantum information from the Gobi Desert to a satellite in space.

    https://www.neowin.net/news/the-firs...-just-happened
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  3. #983
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    Gold, lasers, and antifreeze help reanimate deep-frozen fish
    Call it the reverse Goldfinger
    ...
    So scientists led by John Bischof at the University of Minnesota came up with a new thawing method. Before freezing zebrafish embryos, the researchers injected them with tiny gold cylinders coated in antifreeze. Then, when the scientists were ready to thaw the gold-filled balls of cells, the researchers lit them up with a laser. The laser’s beam heated up the gold particles, warming the embryos from the inside out, according to results published today in the journal ACS Nano.
    ...
    https://www.theverge.com/2017/7/13/1...ep-frozen-fish
    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. #984
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    A brain implant turns “loser” mice into aggressive fighters
    By stimulating one region of the brain, scientists create mouse supersoldiers.

    https://arstechnica.com/science/2017...sive-fighters/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  5. #985
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    Yes, ancient civilizations on Mars sounds crazy. And yet…
    If such civilizations really existed in the past, could we find them today?

    https://arstechnica.com/science/2017...crazy-and-yet/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  6. #986
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    There may be a lot of water beneath the moon's surface according to a new study

    https://www.neowin.net/news/there-ma...to-a-new-study
    Study: US is slipping toward measles being endemic once again
    Just a tiny increase in vaccine refusals will triple measles cases, cost US millions.

    https://arstechnica.com/science/2017...ic-once-again/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  7. #987
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    Report: Human embryo edited for first time in US, pushes limits
    The data is unpublished, but scientists say it advances effort to erase genetic diseases.

    https://arstechnica.com/science/2017...pushes-limits/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  8. #988
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    IBM and Sony have created a tiny cartridge that can store 330TB of uncompressed data

    https://www.neowin.net/news/ibm-and-...ompressed-data
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  9. #989
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    Evidence that ancient farms had very different origins than previously thought
    Dramatic new hypothesis could change the way we understand human history.

    It's an idea that could transform our understanding of how humans went from small bands of hunter-gatherers to farmers and urbanites. Until recently, anthropologists believed cities and farms emerged about 9,000 years ago in the Mediterranean and Middle East. But now a team of interdisciplinary researchers has gathered evidence showing how civilization as we know it may have emerged at the equator, in tropical forests. Not only that, but people began altering their environments for food and shelter about 30,000 years earlier than we thought.
    ...
    https://arstechnica.com/science/2017...ously-thought/
    With genetic morph, a weird type of anthrax has emerged—and it’s on a rampage
    It’s killing wildlife in African rainforests and may wipe out some chimp populations.

    https://arstechnica.com/science/2017...-on-a-rampage/
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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  10. #990
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    Here’s the scientific reason it’s better to drink whiskey on the rocks
    It’s chemistry
    ...
    The distinctive taste of whiskey is largely caused by a molecule called guaiacol, which has one section that likes water and one section that doesn’t like water. In a study published today in the journal Scientific Reports, researchers simulated what happens to guaiacol when there are different concentrations of water, and which combination makes the molecule most potent.

    Of course, the liquid in the Jack Daniels bottle isn’t pure alcohol to begin with. By the time whiskey is in the bottle, it’s usually already about 40 percent alcohol, though this can vary. The simulations showed that at the range of 40 percent to 45 percent alcohol, guaiacol is likely to be floating around at the top of the glass, which enhances both the smell and taste. So adding just a little bit of water can improve the taste of the drink because it pushes the molecule to the surface instead of having it dispersed weakly in the rest of the mixture.
    ...
    https://www.theverge.com/2017/8/17/1...king-chemistry
    Lá em cima há planícies sem fim; Há estrelas que parecem correr; Há o Sol e há dia a nascer;
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