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E.g., 11/23/2017
E.g., 11/23/2017
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  • News

    This material does weird things under pressure

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    A newly fabricated material does more than just hold up under pressure. Unlike many ordinary objects that shrink when squeezed, the metamaterial — a synthetic structure designed to exhibit properties not typically found in natural materials — expands at higher pressures.

    This counterintuitive material is made up of a grid of hollow 3-D crosses — shaped like six-way...

    11/20/2017 - 09:00 Materials, Technology
  • Science Ticker

    Colliding black holes are reported for a fifth time

    Spacetime ripples from black holes are becoming routine.

    For a fifth time, scientists have reported the detection of two colliding black holes via their gravitational waves, tiny vibrations that warp the fabric of spacetime. Unlike previous gravitational wave detections, which were heralded with news conferences often featuring panels of scientists squinting at journalists under bright...

    11/16/2017 - 11:40 Physics, Astronomy
  • News

    Why the wiggle in a crowd’s walk can put a wobble in a bridge

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    Some bridges could really put a swing in your step.

    Crowds walking on a bridge can cause it to sway — sometimes dangerously. Using improved simulations to represent how people walk, scientists have now devised a better way to calculate under what conditions this swaying may arise, researchers report November 10 online in Science Advances.

    When a bridge —...

    11/10/2017 - 14:00 Physics
  • Science Ticker

    Quantum computers take a step forward with a 50-qubit prototype

    Bit by qubit, scientists are edging closer to the realm where quantum computers will reign supreme.

    IBM is now testing a prototype quantum processor with 50 quantum bits, or qubits, the company announced November 10. That’s around the number needed to meet a sought-after milestone: demonstrating that quantum computers can perform specific tasks that are beyond the reach of traditional...

    11/10/2017 - 09:00 Quantum Physics, Computing
  • News

    Mystery void is discovered in the Great Pyramid of Giza

    High-energy particles from outer space have helped uncover an enigmatic void deep inside the Great Pyramid of Giza.

    Using high-tech devices typically reserved for particle physics experiments, researchers peered through the thick stone of the largest pyramid in Egypt for traces of cosmic rays and spotted a previously unknown empty space. The mysterious cavity is the first major structure...

    11/02/2017 - 08:00 Archaeology, Physics, Technology
  • News

    Photons are caught behaving like superconducting electrons

    Light is a fan of the buddy system. Photons, or particles of light, have been spotted swapping energy with partners. This chummy behavior resembles how electrons pair up in materials that conduct current without resistance, known as superconductors, researchers report in a paper accepted in Physical Review Letters.

    Although the photons exchange energy like electrons do, it’s unknown...

    10/30/2017 - 15:21 Condensed Matter, Quantum Physics
  • Science Ticker

    Nobel Prize–winning technique illuminates the fibers that set off battery fires

    Cryo-electron microscopy, an imaging technique that netted three scientists the 2017 Nobel Prize in chemistry, has provided the first atomic-level views of dendrites — whiskery lithium fibers that can spread through lithium-ion batteries, making them short-circuit and catch fire. Until now, scientists couldn’t examine dendrites so closely because the only technique for imaging battery...

    10/26/2017 - 14:00 Materials, Technology
  • News in Brief

    This is the lightest robot that can fly, swim and take off from water

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    A new insect-inspired tiny robot that can move between air and water is a lightweight.

    Weighing the same as about six grains of rice, it is the lightest robot that can fly, swim and launch itself from water, an international team of researchers reports October 25 in Science Robotics. The bot is about 1,000 times lighter than other previously developed aerial-aquatic...

    10/25/2017 - 16:05 Robotics, Technology, Physics
  • News in Brief

    Light’s weird dual nature weathers trip to space and back

    Light is two-faced: Sometimes it behaves like a wave, sometimes like a particle. Now, scientists have shown that light’s shifty disposition persists even after trekking thousands of kilometers into space and back again, researchers report October 25 in Science Advances.

    Depending on how light is measured, it can either be particle-like, lighting up a camera pixel, for example, or...

    10/25/2017 - 14:00 Quantum Physics, Physics
  • Teaser

    A new material may one day keep mussels off piers and boat hulls

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    Shellfish stowaways on boat hulls could become castaways, thanks to a superslippery material.

    Crowds of mussels can grab onto ships, piers and other infrastructure. They slow down the boats they commandeer, and they’re expensive to remove. The hitchhikers can even travel to new places and become invasive species (SN: 3/18/17, p. 30). A new lubricant-infused material...

    10/24/2017 - 13:00 Biophysics, Materials, Oceans