Scientists Say

A weekly word defined, in a sentence and in context.

  1. Brain

    Scientists Say: Deep brain stimulation

    Through wires implanted in a person’s brain, this medical treatment can help treat various conditions.

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  2. Humans

    Scientists Say: Prehistoric

    Researchers rely on prehistoric tools and other artifacts to study the vast stretches of time before recorded history.

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  3. Physics

    Scientists Say: Gamma ray

    Lightning bolts, nuclear explosions, colliding stars and black holes all throw off this high-energy type of light.

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  4. Animals

    Scientists Say: Vertebrate

    Animals with spines, or vertebrates, come in all shapes and sizes.

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  5. Physics

    Scientists Say: Ultrasonic

    This word describes sound waves that have frequencies too high for human ears to hear.

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  6. Chemistry

    Scientists Say: Lignin

    This rigid polymer transports water and gives trees their strength.

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  7. Physics

    Scientists Say: Supercool

    When a liquid is supercooled, it has been chilled below its freezing point without freezing.

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  8. Math

    Scientists Say: Imaginary Number

    These numbers may not be “real,” but they sure aren’t make-believe.

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  9. Chemistry

    Scientists Say: Rare earth element

    Rare earth elements aren’t all that rare — but skyrocketing demand for these metals makes them precious.

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  10. Tech

    Scientists Say: Robot

    These task-doers handle jobs as simple as vacuuming the floor and as complex as navigating extraterrestrial terrains.

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  11. Physics

    Scientists Say: X-ray

    X-rays are a type of light that doctors use to image the inside of the body. Astronomers use X-rays to explore the cosmos.

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  12. Life

    Scientists Say: Mycelium

    These fibrous networks are the reason plants think fungi are such "fun guys.”

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