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  1. Science & Society

    6 surprising records science set in 2021

    Ancient mammoth DNA and a new source of gravitational waves set new records this year.

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  2. Climate

    Vikings may have fled Greenland to escape rising seas

    Vikings abandoned Greenland in the 15th century. Lower temperatures, an expanding ice sheet and rising sea levels may have played a role in their departure.

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  3. Animals

    50 years ago, scientists were genetically modifying mosquitoes

    In 1971, scientists turned to genetics to control disease-spreading mosquitoes without DDT. Today, there are a variety of pesticide-free methods.

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  4. Health & Medicine

    COVID-19 testing is complicated right now.