HS-LS4-3

Apply concepts of statistics and probability to support explanations that organisms with an advantageous heritable trait tend to increase in proportion to organisms lacking this trait.

  1. Health & Medicine

    A Hong Kong man got the new coronavirus twice

    His is the first confirmed case of reinfection with this virus. His second bout was detected by accident, because he showed no symptoms.

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  2. Fossils

    Saber-toothed anchovy relatives were once fearsome hunters

    Today’s plankton-eating anchovies sport tiny teeth. But their ancient kin were armed with spiky lower teeth and a giant upper sabertooth.

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  3. Animals

    Minecraft’s big bees don’t exist, but giant insects once did

    Big bees buzz in Minecraft. In our world, blocky bees might starve and be stuck on the ground. Yet long ago, giant insects did roam our planet.

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  4. Animals

    Analyze This: Shimmering colors may help beetles hide

    Delve into data showing how brilliant colors that shift as a viewer — or predator — moves may help iridescent insects blend in.

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  5. Health & Medicine

    Immune arms-race in bats may make their viruses deadly to people

    An overactive immune system may help bats avoid being sickened by many viruses. This may viruses becoming stronger — and deadlier — when they hit other species.

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  6. Microbes

    Globetrotting microbes in airplane sewage may spread antibiotic resistance

    Along with harder-to-kill microbes, airplane sewage contains a diverse set of the genes that let bacteria evade antibiotics.

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  7. Animals

    Blood vessels in their heads kept big dinos from overheating

    Giant dinosaurs evolved several ways to cool their blood and avoid heatstroke.

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  8. Genetics

    Pacific islanders got a double dose of Stone Age DNA

    Unlike other people, certain Pacific Islanders inherited DNA from two ancient human ‘cousins.’

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  9. Earth

    Bubbles may have sheltered Earth’s early life

    For Earth’s earliest inhabitants, a bubble on the beach would have been the next best thing to a safety blanket.

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  10. Animals

    Wolves beat dogs at problem-solving test

    When treats are at stake, wolves outperformed dogs at opening a closed container. The dog’s relationship with humans may explain why.

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  11. Health & Medicine

    Chikungunya wings its way north — on mosquitoes

    A mosquito-borne virus once found only in the tropics has adapted to survive in mosquitoes in cooler places, such as Europe and North America.

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  12. Physics

    Eyelashes: The ‘sweet’ length

    New mathematical and aerodynamics studies find what seems to be the optimal length for eyelashes — the length that protects best. And surprise: Longer is not always better.

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