Earth

  1. Environment

    Busy beavers may be speeding thaw of Arctic permafrost

    As climate change continues, busy beavers are expanding their range in Alaska. Their dams could further speed the loss of permafrost there and promote local warming.

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  2. Health & Medicine

    Dust can infect animals with flu, raising coronavirus concerns

    Dust particles kicked up from some virus-contaminated surface can become a source of new infections, rodent data show.

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  3. Agriculture

    Scientists Say: Carbohydrate

    Carbohydrates are molecules with carbon, oxygen and hydrogen. Animals break down these chemicals in food to get energy.

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  4. Space

    Scientists Say: Solar

    What do solar energy, the solar year and solar flares have in common? They’re all related to the sun.

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  5. Environment

    Pesticides contaminate most food of western U.S. monarchs

    Monarch caterpillars eat only milkweeds. A new study finds widespread pesticide use has tainted these plants across the insect’s western U.S. breeding grounds.

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  6. Climate

    Siberian heat wave that caused an oil spill made more likely by climate change

    The six-month heat wave in Siberia during the first half of 2020 would not have happened without human-caused climate change, researchers find.

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  7. Earth

    Let’s learn about volcanoes

    Volcanoes bring melted rock up to a planet’s surface.

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  8. Ecosystems

    Scientists Say: Deforestation

    Trees slurp up carbon dioxide and help keep our planet cool. But deforestation cuts those trees down in large numbers.

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  9. Earth

    On an Alaskan glacier, little green moss balls roll in herds

    Oval balls of moss, nicknamed ‘glacier mice,’ roll across some glaciers. A new study explores the mysteries behind their herd-like motion.

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  10. Environment

    Australian wildfires pumped smoke to record heights

    Wildfires in Australia in late December and early January spurred an unusual smoke plume that still hasn’t fully dispersed.

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  11. Ecosystems

    Let’s learn about coral reefs

    Coral reefs are home to many important species. But climate change is stressing corals to the max.

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  12. Earth

    Lightning megaflashes set big new distance and duration records

    Scans of satellite images identified two lightning bolts with previously unheard-of dimensions. Both flashed through the skies over South America.

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