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E.g., 02/18/2018
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Your search has returned 2374 articles:
  • News

    Household products make surprisingly large contributions to air pollution

    AUSTIN, Texas — To reduce your impact on air quality, you might expect to trade in your gas-guzzling clunker of a car — but you can also unplug those air fresheners. 

    In urban areas, emissions from consumer goods such as paint, cleaning supplies and personal care products now contribute as much to ozone and fine particulate matter in the atmosphere as do emissions from burning gasoline...

    02/15/2018 - 14:00 Chemistry, Pollution
  • News

    Quantum computers go silicon

    For quantum computers, silicon’s springtime may finally have arrived.

    Silicon-based technology is a late bloomer in the quantum computing world, lagging behind other methods. Now for the first time, scientists have performed simple algorithms on a silicon-based quantum computer, physicist Lieven Vandersypen and colleagues report online February 14 in Nature.  

    The computer has just...

    02/14/2018 - 13:00 Quantum Physics
  • News

    New technique shows how 2-D thin films take the heat

    High-energy particle beams can reveal how 2-D thin sheets behave when the heat is cranked up.

    Researchers have devised a way to track how these materials, such as the supermaterial graphene, expand or contract as temperatures rise (SN: 10/3/15, p. 7). This technique, described in the Feb. 2 Physical Review Letters, showed that 2-D semiconductors arranged in single-atom-thick sheets...

    02/13/2018 - 11:26 Materials, Physics, Technology
  • News

    5 ways the heaviest element on the periodic table is really bizarre

    The first 117 elements on the periodic table were relatively normal. Then along came element 118.

    Oganesson, named for Russian physicist Yuri Oganessian (SN: 1/21/17, p. 16), is the heaviest element currently on the periodic table, weighing in with a huge atomic mass of about 300. Only a few atoms of the synthetic element have ever been created, each of which survived for less than a...

    02/12/2018 - 09:00 Physics, Chemistry
  • Teaser

    Smart windows could block brightness and harness light

    Who needs curtains? One day, you could block out afternoon glare and heat with changeable windows that absorb sunshine to charge your electronics.

    A high-tech prototype panel described online January 22 in Nature Materials, switches between transparent pane and dark-tinted solar cell. The layer in the panel that’s responsible for soaking up sun has atoms that only arrange themselves into...

    02/08/2018 - 09:00 Materials, Technology
  • 50 years on, nuclear fusion still hasn’t delivered clean energy

    Power within 30 years

    Controlled thermonuclear fusion is moving so well that full-scale development could begin within five years, says Dr. David J. Rose....It might take 20 to 30 years beyond that before fusion could move into the power grid, though, he predicts. — Science News, February 17, 1968

    Update

    Governments and private-sector start-ups are still trying to wrangle...

    02/08/2018 - 07:00 Physics, Technology, Science & Society
  • Letters to the Editor

    Readers ask about supernovas, dark energy and more

    Dying light

    Supernova iPTF14hls has erupted continually since its discovery in 2014, fluctuating in brightness at least five times. It may have had two other outbursts in the past, Lisa Grossman reported in “This star cheated death, exploding again and again” (SN: 12/9/17, p. 8).

    Reddit user Bobgushmore wondered if the exploding star might actually be a supernova impostor similar to...

    02/07/2018 - 15:30 Astronomy, Physics, Science & Society
  • Feature

    Skyrmions open a door to next-level data storage

    Like sailors and spelunkers, physicists know the power of a sturdy knot.

    Some physicists have tied their hopes for a new generation of data storage to minuscule knotlike structures called skyrmions, which can form in magnetic materials. Incredibly tiny and tough to undo, magnetic skyrmions could help feed humankind’s hunger for ever-smaller electronics.

    On traditional hard drives,...

    02/07/2018 - 15:03 Materials, Physics
  • News in Brief

    Superdense wood is lightweight, but strong as steel

    View the video

    Newly fabricated superstrong lumber gives a whole new meaning to “hardwood.”

    This ultracompact wood, described in the Feb. 8 Nature, is created by boiling a wood block in a water-based solution of sodium hydroxide and sodium sulfite. The chemicals partially strip the wood of substances called lignin and hemicellulose, which help give wood its structure and rigidity....

    02/07/2018 - 13:00 Materials, Technology
  • News

    Laser experiment hints at weird in-between ice

    A proposed form of ice acts like a cross between a solid and a liquid. Now, a new study strengthens the case that the weird state of matter really exists.

    Hints of the special phase, called superionic ice, appeared in water ice exposed to high pressures and temperatures, researchers report February 5 in Nature Physics. Although such unusual ice isn’t found naturally on Earth, it might...

    02/05/2018 - 11:00 Physics