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We summarize the week's scientific breakthroughs every Thursday.

  1. Health & Medicine

    Aimee Grant investigates the needs of autistic people

    The public health researcher focuses on what kinds of support people with autism need rather than on treating the condition as a disease to cure.

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  2. Neuroscience

    Tiny treadmills show how fruit flies walk

    A method to force fruit flies to move shows the insects’ stepping behavior and holds clues to other animals’ brains and movement.

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  3. Artificial Intelligence

    This robot can tell when you’re about to smile — and smile back

    Using machine learning, researchers trained Emo to make facial expressions in sync with humans.

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  4. Animals

    Eavesdropping on fish could help us keep better tabs on underwater worlds

    Scientists are on a quest to log all the sounds of fish communication. The result could lead to better monitoring of ecosystems and fish behavior.

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  5. Neuroscience

    Chickadees use memory ‘bar codes’ to find their hidden food stashes

    Unique subsets of neurons in a chickadee’s memory center light up for each distinct cache, hinting at how episodic memories are encoded in the brain.

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  6. Animals

    By fluttering its wings, this bird uses body language to tell its mate ‘after you’

    New observations suggest that Japanese tits gesture to communicate complex messages — a rare ability in the animal kingdom and a first seen in birds.

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  7. Artificial Intelligence

    AI learned how to sway humans by watching a cooperative cooking game

    New research used the game Overcooked to show how offline reinforcement learning algorithms could teach bots to collaborate with — or manipulate — us.

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  8. Psychology

    Timbre can affect what harmony is music to our ears

    The acoustic qualities of instruments may have influenced variations in musical scales and preferred harmonies.

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  9. Animals

    Big monarch caterpillars don’t avoid toxic milkweed goo. They binge on it

    Instead of nipping milkweed to drain the plants’ defensive sap, older monarch caterpillars may seek the toxic sap. Lab larvae guzzled it from a pipette.

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  10. Life

    This is the first egg-laying amphibian found to feed its babies ‘milk’

    Similar to mammals, these ringed caecilians make a nutrient-rich milk-like fluid to feed their mewling hatchlings up to six times a day.

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  11. Environment

    How air pollution may make it harder for pollinators to find flowers

    Certain air pollutants that build up at night can break down the same fragrance molecules that attract pollinators like hawk moths to primroses.

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  12. Animals

    Does this drone image show a newborn white shark? Experts aren’t sure

    If a claim of the first-ever sighting of a newborn white shark holds, it could help solve a mystery of where adult white sharks give birth.

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