HS-LS2-8

Evaluate the evidence for the role of group behavior on individual and species' chances to survive and reproduce.

  1. Life

    Why some whales become giants and others are only big

    Being big helps whales access more food. But just how big a whale can get is influenced by whether it hunts or filter-feeds.

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  2. Brain

    Scientists’ brains shrank after a long stay in Antarctica

    The isolation of a long-term mission at an Antarctic research station shrunk part of crew members’ brains, a small study suggests.

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  3. 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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  4. Brain

    Surprise! Exam scores benefit from months of regular sleep

    Getting enough consistent, quality sleep accounted for nearly a fourth of the differences in students’ exam scores in class.

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  5. Animals

    Whales echolocate with big clicks and tiny amounts of air

    Toothed whales may echolocate using bits of air that they recycle inside their heads to conserve both air and energy.

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  6. Brain

    As teens gain weight, they find high-fat foods less pleasurable

    Teens who gained excess weight showed less activity in the brain’s reward center when viewing or tasting foods with lots of fat.

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  7. Health & Medicine

    By the numbers: How infectious measles and other diseases spread

    A number called R0 measures how contagious an infectious disease is. It helps explain why measles is so dangerous.

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  8. Life

    Explainer: Prokaryotes and Eukaryotes

    Prokaryotes tend to be small and simple, while eukaryotes have embraced a highly organized lifestyle. These divergent approaches to life have both proved very successful.

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  9. Animals

    Hunting hidden salamanders with eDNA

    The Japanese clouded salamander is an elusive beast. To find a new population, three teens turned to high-tech methods.

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  10. Environment

    ‘Boot camp’ teaches rare animals how to go wild

    Animals raised in captivity cannot safely re-enter the wilds without first understanding how to find food and avoid becoming a predator’s lunch. Scientists are helping some species learn this.

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  11. Oceans

    Small swimmers may play huge role in churning the seas

    Hoards of migrating shrimp and krill can cause large-scale water movements in the ocean, a new study suggests.

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  12. Health & Medicine

    Scientists discover how norovirus hijacks the gut

    Noroviruses make people vomit, but scientists didn’t actually know why. It now turns out that those viruses cause their misery by attacking special “tuft” cells in the gut.

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