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  1. Health & Medicine

    How raccoon dog DNA fits into the COVID-19 origins debate

    Did the virus that causes COVID-19 come from animals or a lab? Evidence hints at animals. Either way, we should be prepping for the next pandemic.

    By Erin Garcia de Jesús
  2. Animals

    Scientists have now recorded brain waves from freely moving octopuses

    The data reveal some unexpected patterns, though it’s too early to know how octopus brains control the animals’ behavior, a new study finds.

    By Nora Bradford
  3. Math

    Here’s a peek into the mathematics of black holes

    The universe tells us slowly rotating black holes are stable. A nearly 1,000-page proof confirms it.

    By Rachel Crowell
  4. Genetics

    DNA from Beethoven’s hair hints at what killed the composer

    Many historians suspect Beethoven died from liver failure.