HS-LS4-4

Construct an explanation based on evidence for how natural selection leads to adaptation of populations.

More Stories in HS-LS4-4

  1. Animals

    The many efforts to lick cat allergies

    Up to one in five people around the world may be allergic to cats. Science is coming to help their desire for kitty cuddles.

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  2. 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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  3. Health & Medicine

    Your most urgent questions about the new coronavirus

    Researchers have more questions than answers right now about 2019-nCoV. They’re racing to understand and stop the coronavirus and the health crisis it poses.

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  4. Fossils

    Small T. rex ‘cousins’ may actually have been growing teens

    Dinosaurs once thought to be mini cousins of Tyrannosaurus rex may have been merely adolescent members of the famous species, a new study suggests.

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  5. Environment

    Australian fires have imperiled up to 100 species

    As massive wildfires consume huge swaths of Australia’s bush, untold species — many of them found nowhere else — are now threatened with extinction.

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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. Microbes

    Drug-resistant germs kill some 35,000 Americans each year

    The new mortality rate may be way low, some experts say. Also troubling are two new germs that have emerged as big and urgent threats.

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