All Stories

  1. Tech

    No animal died to make this steak

    The ribeye steak is the first of its kind, and the latest in a growing list of meats printed with a 3-D bioprinter instead of being harvested from an animal.

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  2. Tech

    New robots can clean virus-laden surfaces so people won’t have to

    Smart and nimble cleaning robots will soon help disinfect spaces. They twist and bend to hit hard-to-reach spaces with UV light or cleansing sprays.

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  3. Genetics

    Europe’s ancient humans often hooked up with Neandertals

    DNA from ancient bones shows humans and Neandertals were regularly mixing genes by about 45,000 years ago.

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  4. Earth

    Here’s how lightning may help clean the air

    Airplane observations show that storm clouds can generate huge quantities of air-cleansing chemicals known as oxidants.

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  5. Ecosystems

    Analyze This: Invasive species cost the world billions each year

    A new study estimates that invasive species have cost the world more than $1 trillion since 1970. That’s almost certainly an underestimate.

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  6. Chemistry

    Scientists Say: Metal

    Metals are substances that can be elements, alloys or compounds. They all conduct heat and electricity and can be formed into different shapes.

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  7. Materials Science

    New device gets power from 5G signals grabbed from the air

    A new way to harvest electricity relies on a tiny array of antennas and a lens. Together, they collect and focus 5G signals coming from any direction.

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  8. Physics

    Why big nuts always rise to the top

    X-rays scans of a box of mixed nuts now reveal why large Brazil nuts rise to the top.

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  9. Fossils

    Rhinos, camels and bone-crushing dogs once roamed Nebraska

    Scientists digging into the remnants of an ancient watering hole in Nebraska discovered evidence of an Africa-like savanna, complete with rhinos.

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  10. Life

    These rabbits can’t hop. A gene defect makes them do handstands

    Mutations in a gene that helps nerve cells work properly rob rabbits of their ability to hop. Instead, the animals use their front paws to move.

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  11. Animals

    Explainer: What are cicadas?

    There are more than 3,000 species of cicadas, but the best known in North America are periodical cicadas, which emerge every 13 or 17 years.

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  12. Animals

    How bees play telephone to form a swarm

    Honeybees use pheromones and flapping wings to tell each other where to find the queen — so they can all be together. Learn more with this web comic.

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