Chemistry

  1. Planets

    No, organic molecules alone don’t point to life on Mars

    These carbon-based molecules, found in a meteorite, may reflect merely a mixing of water and minerals on the Red Planet over billions of years.

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  2. Chemistry

    Explainer: What are fats?

    A fat molecule's three long chains of carbon and hydrogen atoms repel water, stash energy and keep living things warm — even in the bitter cold.

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  3. Ecosystems

    Scientists Say: Decay

    This word can refer to rotting flesh or the transformation of radioactive atoms.

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  4. Chemistry

    Snail slime + gold could boost the power of sunscreens and more

    These two strange ingredients could make skin-care products that are better for both our skin and the environment.

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  5. Chemistry

    Explainer: What is a metal?

    Metals can bend and pull without snapping, and conduct electricity. The reason: Their atoms tend to lose electrons to neighboring atoms.

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  6. Chemistry

    Could reusable ‘jelly ice’ cubes replace regular ice?

    These hydrogel “jelly ice cubes” are made mostly of gelatin and water. They won’t melt, even when thawed, and may provide new food cooling options.

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  7. Chemistry

    Scientists Say: Silicon

    The chemical element silicon is used to make everything from bricks to cookware to electronics.

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  8. Materials Science

    This glitter gets its color from plants, not a synthetic plastic

    In the new material, tiny arrangements of cellulose reflect light in specific ways to create vibrant hues in an environmentally friendly glitter.

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  9. Environment

    A new way to make plastics could keep them from littering the seas

    Borrowing from genetics, scientists are creating plastics that will degrade. They can even choose how quickly these materials break down.

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  10. Life

    Scientists Say: Experiment

    An experiment is a set of procedures to learn about the world — and an important part of the scientific process.

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  11. Tech

    Scientists find a ‘greener’ way to make jeans blue

    When coated onto jeans, a plant-based polymer reduces water and cuts the amount of toxic chemicals needed.

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  12. Chemistry

    Chemistry solves a French royal mystery

    Ink analysis reveals the hidden words of Marie Antoinette's letters and who tried to hide them.

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