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E.g., 03/22/2018
E.g., 03/22/2018
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  • News

    Tree rings tell tale of drought in Mongolia over the last 2,000 years

    A new analysis is shedding light on drought in Mongolia, both past and future.

    By studying the rings of semifossilized trees, researchers constructed a climate history for the semiarid Asian nation spanning the last 2,060 years — going 1,000 years further back than previous studies.

    It was suspected that a harsh drought from about 2000 to 2010 that killed tens of thousands of...

    03/19/2018 - 10:26 Climate, Earth
  • Science & the Public

    What we can and can’t say about Arctic warming and U.S. winters

    It certainly feels like the northeastern United States is getting snowier.

    In the first two weeks of March, three winter storms slammed into the northeast corridor from Washington, D.C., to Boston. Over the last decade, a flurry of extreme winter storms has struck the region, giving birth to clever portmanteau names such as Snowpocalypse (2009), Snowmageddon (2010) and Snowzilla (2016...

    03/16/2018 - 09:00 Science & Society, Climate
  • Feature

    When bogs burn, the environment takes a hit

    In 2015, massive wildfires burned through Indonesia, sending thick smoke and haze as far as Thailand.

    These fires were “the worst environmental disaster in modern history,” says Thomas Smith, a wildfire expert at King’s College London. Smith estimates that the fires and smoke killed 100,000 people in Indonesia and neighboring countries and caused billions of...

    03/06/2018 - 12:00 Ecosystems, Climate, Agriculture
  • News in Brief

    Strong winds send migrating seal pups on lengthier trips

    PORTLAND, Ore. — Native American fishermen in Alaska have long said that seal pups go with the wind rather than struggle against it. Now, a new study confirms that wisdom. Migrating northern fur seal pups travel hundreds of kilometers farther in blustery years than in milder years, researchers reported February 14 at the American Geophysical Union’s Ocean Sciences meeting. Those epic journeys...

    02/15/2018 - 16:32 Animals, Earth, Climate
  • News

    Look to penguins to track Antarctic changes

    PORTLAND, Ore. — Penguins preserve records of Antarctic environmental change. The birds’ feathers and eggshells contain the chemical fingerprints of variations in diet, food web structure and even climate, researchers reported February 12 at the American Geophysical Union’s 2018 Ocean Sciences Meeting.

    The Antarctic environment has changed dramatically in recent decades. Overfishing has...

    02/14/2018 - 17:16 Climate, Animals
  • News

    A peek into polar bears’ lives reveals revved-up metabolisms

    View the video

    Female polar bears prowling springtime sea ice have extreme weight swings, some losing more than 10 percent of their body mass in just over a week. And the beginnings of bear video blogging help explain why.

    An ambitious study of polar bears (Ursus maritimus) in Alaska has found that their overall metabolic rate is 1.6 times greater than thought, says wildlife...

    02/01/2018 - 15:24 Animals, Physiology, Climate
  • News in Brief

    Grapevines are more drought-tolerant than thought

    The latest word on the grapevine is promising.

    During more than a decade of observation, grapevines in Napa, Calif., and Bordeaux, France, never reached lethal levels of dehydration from seasonal drought, researchers report online January 31 in Science Advances. Plant ecophysiologist Guillaume Charrier, at the French National Institute for Agricultural Research in Paris, and colleagues...

    01/31/2018 - 17:33 Agriculture, Climate, Sustainability
  • News

    Overlooked air pollution may be fueling more powerful storms

    Though they be but little, they are fierce.

    Airborne particles smaller than 50 nanometers across can intensify storms, particularly over relatively pristine regions such as the Amazon rainforest or the oceans, new research suggests. In a simulation, a plume of these tiny particles increased a storm’s intensity by as much as 50 percent.

    Called ultrafine aerosols, the particles are...

    01/25/2018 - 14:00 Earth, Climate
  • News

    Rising CO2 in lakes could keep water fleas from raising their spiky defenses

    Rising carbon dioxide levels could leave some tiny lake dwellers defenseless. Like the oceans, some lakes are experiencing increasing levels of the greenhouse gas, a new study shows. And too much CO2 in the water may leave water fleas, an important part of many lake food webs, too sleepy to fend off predators.

    Detailed observations of lake chemistry over long periods of time are rare....

    01/11/2018 - 16:29 Climate, Ecology
  • Editor's Note

    We’ll be watching the skies, plus a lot more, this year

    If this issue is any clue, 2018 may be the Year of Space. Our pages are packed with a surprising wealth of content for astronomy lovers, and anyone who dreams of otherworldly encounters.

    In our cover story, astronomy writer Lisa Grossman reports on the race to Mars. SpaceX announced last year that it plans to get people to the Red Planet by 2024, but the battle over what humans’...

    01/10/2018 - 12:32 Science & Society, Astronomy, Climate