All Stories

  1. Animals

    Explainer: What is metamorphosis?

    Insects, amphibians and some fish undergo metamorphosis. But they’re not the only ones.

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  2. Animals

    Megalodons may have become megahunters by running hot

    O. megalodon sharks were warm-blooded mega-predators. But when food sources dwindled, colder-blooded sharks may have had an evolutionary edge.

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  3. Earth

    A volcanic eruption sparked the highest lightning ever seen

    The eruption plume spawned lightning that started 20 to 30 kilometers (some 12 to 19 miles) above sea level.

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  4. Ecosystems

    Scientists Say: Predator and Prey

    Ecological relationships between predators and their prey drive the evolution of plants, animals and microbes.

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  5. Health & Medicine

    Swollen chambers in astronauts’ brains may take 3 years to recover

    How long astronauts spend in space and the time since their last mission affects how much fluid-filled chambers in their brains expand while in space.

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  6. Plants

    A single particle of light can kick off photosynthesis

    In a new experiment with bacteria, a lone photon sparked the process of turning light to chemical energy.

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  7. Animals

    Northern elephant seals snooze only two hours a day at sea

    These marine mammals sleep only minutes at a time on months-long trips at sea.

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  8. Earth

    Scientists Say: Tectonic Plate

    Tectonic plates are giant slabs of rock that make up Earth’s outer layer.

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  9. Animals

    Explainer: What is animal domestication?

    The difference between a dog and a wolf isn’t looks or genes or even behavior. It’s the relationship these animals have with people.

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  10. Materials Science

    This house is partly made of recycled diapers

    After being washed, dried, sanitized and shredded, used diapers were mixed with other materials to make a strong concrete.

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  11. Chemistry

    Experiment: Test the effect of temperature on reaction time

    Alka-Seltzer tablets fizzle furiously when dropped into water. Can you make Alka-Seltzer fizz faster or more loudly by changing the water’s temperature?

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  12. Space

    Lightning dances through Jupiter’s skies much like it does on Earth 

    Data from NASA’s Juno spacecraft hint that Jupiter’s lightning extends in jagged steps as it does on Earth.

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