Scientists have found that two-dimensional (2D) nanostructures with asymmetric design enable a new quantum mechanism, triggering the emission of tunable light at terahertz frequencies—with unprecedented efficiency.
General Physics
Jun 18, 2014
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Magnetic separators exploit the difference in magnetic properties between minerals, for example when separating magnetite from quartz. But this exercise becomes considerably more complex when the particles are not magnetic. ...
General Physics
Jun 18, 2014
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In 2006, Austin, Texas, became the first city in the country to ban a commonly used pavement sealant over concerns that it was a major source of cancer-causing compounds in the environment. Eight years later, the city's action ...
Environment
Jun 18, 2014
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Animals have the ability to conceal their sickness in certain social situations. According to a new review, when given the opportunity to mate or in the presence of their young, sick animals will behave as though they were ...
Plants & Animals
Jun 18, 2014
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Global automakers are locked in a showdown evoking the video format wars of the 1980s, as they bet on what eco-friendly vehicles will prevail in the battle for dominance of the burgeoning low-emissions sector.
Energy & Green Tech
Jun 18, 2014
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(Phys.org) —An international team of researchers has concluded that migrations by pre-Columbian Andean societies were due to climatic changes, rather than growth in the Wari empire, as was previously suggested. In their ...
UN cultural agency UNESCO on Wednesday warned Australia that the Great Barrier Reef could be put on a list of endangered World Heritage Sites if more is not done to protect it.
Environment
Jun 18, 2014
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Scientists have named a new species of horned dinosaur (ceratopsian) based on fossils collected from Montana in the United States and Alberta, Canada. Mercuriceratops (mer-cure-E-sare-ah-tops) gemini was approximately 6 meters ...
Archaeology
Jun 18, 2014
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Taiwan's struggling personal computer maker Acer named a new chairman Wednesday, succeeding founder Stan Shih who had returned from retirement for a six-month stint to launch a series of reforms.
Business
Jun 18, 2014
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See that small pixel? That's an entire moon you're looking at! Peeking between the rings of Saturn is the tiny saucer-shaped moon Atlas, as viewed from the Cassini spacecraft. The image is pretty, but there's also a scientific ...
Space Exploration
Jun 18, 2014
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