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Your search has returned 494 articles:
  • Science Ticker

    Arctic sea ice hits record wintertime low

    Arctic sea ice has hit a record low for the third year in a row. It’s the paltriest maximum extent seen since recordkeeping began in 1979, scientists at NASA and the National Snow and Ice Data Center announced March 22.

    Total sea ice cover on the Arctic Ocean peaked on March 7, satellite observations show, reaching a total area of 14.42 million square kilometers. That’s around 100,000...

    03/23/2017 - 12:31 Climate, Oceans
  • News

    Changing climate could worsen foods’ nutrition

    A dinner plate piled high with food from plants might not deliver the same nutrition toward the end of this century as it does today. Climate change could shrink the mineral and protein content of wheat, rice and other staple crops, mounting evidence suggests.

    Selenium, a trace element essential for human health, already falls short in diets of one in seven people worldwide. Studies link...

    03/13/2017 - 15:07 Climate, Nutrition, Agriculture
  • News

    Warming soils may belch much more carbon

    As the planet warms, carbon stashed in Earth’s soils could escape into the atmosphere far faster than previously thought. In the worst-case scenario for climate change, carbon dioxide emissions from soil-dwelling microbes could increase by 34 to 37 percent by 2100, researchers report online March 9 in Science. Previous studies predicted a more modest 9 to 12 percent rise if no efforts are...

    03/09/2017 - 14:00 Earth, Climate
  • Reviews & Previews

    Invasive species, climate change threaten Great Lakes

    The Death and Life of the Great LakesDan EganW.W. Norton & Co., $27.95

    Every summer, people flock to the Great Lakes to swim and fish in the seemingly infinite waters and hike along the idyllic shores. But an ominous undercurrent flows just out of sight. Below the water’s surface rages an environmental catastrophe 200 years in the making.

    In The Death and Life of the Great...

    03/07/2017 - 08:00 Ecosystems, Climate, Science & Society
  • Science Ticker

    Antarctic sea ice shrinks to record low

    Sea ice around Antarctica shrunk to its lowest monthly extent on record in January, the National Oceanic and Atmospheric Administration reports.

    Antarctic sea ice extent averaged just 4.04 million square kilometers, 1.19 million square kilometers below the 1981 through 2010 average. That’s 280,000 square kilometers smaller than the previous record low, set in 2006.

    The new record...

    02/17/2017 - 13:14 Climate, Oceans, Earth
  • Science Ticker

    Desert songbirds increasingly at risk of dehydration

    Desert songbirds, especially the little fit-in-your-hand ones, could soon face widening danger zones for lethal thirst in the southwestern United States, a new study predicts.

    Coping with heat waves can demand so much water evaporation to prevent heat stroke — from panting, for instance — that birds can die from dehydration, says Blair Wolf of the University of New Mexico in Albuquerque...

    02/13/2017 - 17:11 Climate, Animals, Conservation
  • News

    Hot nests, not vanishing males, are bigger sea turtle threat

    Worries about climate change threatening sea turtles may have been misdirected.

    Warming that could lead to far more female hatchlings than males isn’t the most immediate danger from climate shifts. Lethally overheated beach nests are more important, researchers argue February 8 in Proceedings of the Royal Society B.

    Climate change can meddle with sex ratios of the seven species of...

    02/07/2017 - 19:05 Climate, Animals, Conservation
  • Science Ticker

    Cone snails wander in circles, lose focus with boosted CO2

    Cone snails are normally stealthy hunters, but they become clumsy and unfocused in water with increased levels of carbon dioxide.

    Oceans absorb CO2 from the atmosphere. As atmospheric CO2 levels rise, those in the oceans do too, changing the chemistry of the seawater.

    Cone snails (Conus marmoreus) that spent several weeks in water dosed to simulate CO2 levels expected at the turn...

    02/02/2017 - 17:00 Oceans, Climate, Animals
  • News

    Climate change may boost toxic mercury levels in sea life

    The muddying of coastal waters by climate change could drastically increase levels of neurotoxic mercury in sea life, contaminating food supplies.

    Shifting rainfall patterns may send 10 to 40 percent more water filled with dissolved bits of organic debris into many coastal areas by 2100. The material can cloud the water, disrupting marine ecosystems by shifting the balance of microbes at...

    01/27/2017 - 14:10 Oceans, Pollution, Climate
  • News in Brief

    Earth’s last major warm period was as hot as today

    The last time Earth’s thermostat was cranked as high as it is today, sea levels were high enough to completely drown New Orleans (had it existed at the time), new research suggests.

    Ocean surface temperatures around 125,000 years ago were comparable to those today, researchers report in the Jan. 20 Science. Previous estimates suggested that this period, the height of the last warm phase...

    01/19/2017 - 14:00 Climate, Earth, Oceans