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  1. Animals

    There’s more to pufferfish than that goofy spiked balloon

    Three odd things about pufferfishes: how they mate, how they bite and what’s up with no fish scales?

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  2. Physics

    Scientists seek materials that defy friction at the atomic level

    Scientists investigate superslippery materials and other unusual friction feats.

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  3. Life

    Monkeys can use basic logic to decipher the order of items in a list

    Rhesus macaque monkeys don’t need rewards to learn and remember how items are ranked in a list, a mental feat that may prove handy in the wild.

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  4. Health & Medicine

    A new study challenges the idea that the placenta has a microbiome

    A large study of more than 500 women finds little evidence of microbes in the placenta, contrary to previous reports on the placental microbiome.