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Your search has returned 172 articles:
  • News

    1 million species are under threat. Here are 5 ways we speed up extinctions

    Stories about individual species on the brink of extinction may be all too familiar. But a new tally now reveals the breadth of the conservation crisis: One million of the world’s species are now poised to vanish, some as soon as within the next few decades.

    That number, which amounts to 1 in every 8 animal or plant species on Earth, comes from a sweeping new analysis of about 15,000...

    05/08/2019 - 06:00 Conservation, Climate, Pollution, Science & Society
  • News

    Tiny microplastics travel far on the wind

    Plastic pollution from Paris doesn’t necessarily stay in Paris.

    Tiny bits of plastic that originated in cities were carried by wind to a remote mountain location at least 95 kilometers away, a study finds. It’s the first demonstration that microplastics, tiny particles ranging from a few nanometers to 5 millimeters in size, can travel far through the atmosphere.

    Even more startling...

    04/15/2019 - 11:00 Climate, Pollution
  • News

    Why kids may be at risk from vinyl floors and fire-resistant couches

    WASHINGTON — Home decor like furniture and flooring may not be notorious polluters like gas-guzzlers, but these indoor consumer products can also be significant sources of potentially dangerous chemicals.

    Kids who live in homes with all vinyl flooring or living room couches that contain flame retardants have much higher concentrations of chemicals called semivolatile organic compounds in...

    02/21/2019 - 06:00 Chemistry, Health, Pollution
  • News

    Chinese ‘tweets’ hint that happiness drops as air pollution rises

    Air pollution is recognized as a public health threat in China, linked to heart disease, cancer, cognitive decline and even risky behavior. Now a study analyzing air quality data and social media posts on China’s version of Twitter suggests that poor air quality may also harm people’s sense of well-being.

    “The higher the levels of air pollution in Chinese cities, the lower people’s...

    01/30/2019 - 11:19 Health, Pollution
  • News

    4 ways to tackle ocean trash besides Ocean Cleanup’s broken system

    Cleaning up ocean pollution is no simple task, as an effort to fish plastic out of the Pacific Ocean is revealing.

    In September, scientists launched a 600-meter-long boom meant to herd plastic debris from the great Pacific garbage patch into a net (SN Online: 9/7/18). The trash accumulation, which is twice the size of Texas, swirls in waters between California and Hawaii.

    But some...

    01/04/2019 - 15:48 Pollution
  • News

    Satellites make mapping hot spots of ammonia pollution easier

    Satellites may be a more accurate way to track smog-producing ammonia.

    It’s notoriously tricky to pinpoint accurate numbers for ammonia gas emissions from sources such as animal feedlots and fertilizer plants. But new maps, generated from infrared radiation measurements gathered by satellites, reveal global ammonia hot spots in greater detail than before. The new data suggest that...

    01/04/2019 - 07:00 Pollution, Climate
  • Feature

    Engineers are plugging holes in drinking water treatment

    Off a gravel road at the edge of a college campus — next door to the town’s holding pen for stray dogs — is a busy test site for the newest technologies in drinking water treatment.

    In the large shed-turned-laboratory, University of Massachusetts Amherst engineer David Reckhow has started a movement. More people want to use his lab to test new water treatment technologies than the...

    11/25/2018 - 06:00 Pollution, Health
  • Science Stats

    Car tires and brake pads produce harmful microplastics

    There’s a big problem where the rubber meets the road: microplastics.

    Scientists analyzed more than 500 small particles pulled from the air around three busy German highways, and found that the vast majority — 89 percent — came from vehicle tires, brake systems and roads themselves. All together, these particles are classified by the researchers as microplastics, though they include...

    11/12/2018 - 08:38 Pollution, Technology
  • Science & the Public

    We’re probably undervaluing healthy lakes and rivers

    For sale: Pristine lake. Price negotiable.

    Most U.S. government attempts to quantify the costs and benefits of protecting the country’s bodies of water are likely undervaluing healthy lakes and rivers, researchers argue in a new study. That’s because some clean water benefits get left out of the analyses, sometimes because these benefits are difficult to pin numbers on. As a result, the...

    10/14/2018 - 08:00 Pollution, Science & Society
  • Letters to the Editor

    Readers contemplate water on Mars and more

    Life signs

    Scientists estimate that there are roughly 10 billion liters of liquid water beneath a polar glacier on Mars, Lisa Grossman reported in “Mars (probably) has a lake of liquid water” (SN: 8/18/18 & 9/1/18, p. 6).

    Some online readers wondered what the detection meant for the possibility of life on the Red Planet.

    Grossman wrote about the lake’s implications for life...

    09/26/2018 - 07:00 Planetary Science, Pollution, Technology