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  What's the annual value of trees? $500 million per megacity, study says

  17 hours ago

  In the megacities that are home to nearly 10 percent of the world's 7.5 billion people, trees provide each city with more than $500 million each year in services that make urban environments cleaner, more affordable and more ...

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  Unconventional quantum systems may lead to novel optical devices

  18 hours ago feature

  (Phys.org)—Physicists have experimentally demonstrated an optical system based on an unconventional class of quantum mechanical systems that could lead to the development of new quantum optical devices. The system is called ...

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  Astronomers detect methanol maser emission towards nearby galaxy

  19 hours ago report

  (Phys.org)—Using the Australia Telescope Compact Array (ATCA), a team of astronomers has detected methanol emission toward a nearby galaxy known as NGC 4945. The finding, reported Aug. 18 in a paper published on arXiv.org, ...

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  Prototype technology for unearthing minefields with fire developed by team

  19 hours ago

  Engineers have developed prototype technology that uses controlled burning to partially reveal landmines buried in peat soil.

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  Model reveals best approach to get people to conserve water in different areas

  19 hours ago report

  (Phys.org)—A team of researchers from several institutions in Australia has developed a model that sheds light on the social factors involved in getting users to cooperate on water conservation efforts. In their paper published ...

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  Technique expedites chemical screening to prioritize toxicity testing

  19 hours ago

  Researchers from North Carolina State University have developed a high-throughput technique that can determine if a chemical has the potential to activate key genes in seconds rather than the typical 24 hours or more. The ...

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  The moving Martian bow shock

  19 hours ago

  As the energetic particles of the solar wind speed across interplanetary space, their motion is modified by objects in their path. A study, based on data from ESA's Mars Express orbiter, has thrown new light on a surprising ...

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  Kodiak bears found to switch to eating elderberries instead of salmon as climate changes

  19 hours ago report

  (Phys.org)—A team of researchers affiliated with several institutions in the U.S. has found that warming in Alaska has sometimes caused the Kodiak bear to switch to eating elderberries during salmon spawning periods instead ...

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  How a bacterium can live on methanol

  19 hours ago

  ETH Zurich researchers have identified all the genes required by a bacterium to use methanol as a food source. The results will help scientists advance the use of this resource in the field of biotechnology.

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  Scientists find soil bacteria require two-layer security, just like digital world

  20 hours ago

  Those people at Google think they're sooooo smart. So, too, the Apple and Microsoft wunderkinds.