HS-LS2-8

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

  1. Animals

    Around the world, birds are in crisis

    Human activities around the world are threatening bird species. Numbers of even some of the most common species are starting to fall.

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  2. Life

    Ogre-faced spiders listen closely to snatch bugs from the air

    Ogre-faced spiders can hear prey sneaking around behind them. Low frequencies can trigger a blind, backwards attack.

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  3. Plants

    Please do not touch the Australian stinging tree

    Stinging-tree leaves look soft and inviting, but one touch delivers agony. Structurally, the plant's painful chemical looks a lot like spider venom.

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  4. Health & Medicine

    Third major vaccine shows great promise against COVID-19

    This vaccine, which may be easier to get to the public, appears to be 90 percent effective at halting disease and maybe spread of the new coronavirus.

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  5. Health & Medicine

    Scientists Say: Puberty

    Puberty is a time when hormones surge and people develop the ability to have children. But it’s so much more than that.

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  6. Health & Medicine

    Moderna vaccine for COVID-19 appears nearly 95 percent effective

    A second coronavirus vaccine appears super effective in preventing people from being sickened by COVID-19.

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  7. Animals

    This snake rips open a living toad to feast on its organs

    A particularly gruesome way to kill may help small-banded kukri snakes avoid a deadly poison secreted from the neck and backs of some toads.

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  8. Animals

    Analyze This: Ropes restore a gibbon highway through a rainforest

    When endangered Hainan gibbons started making risky leaps across an area mowed down by a landslide, researchers provided them a rope bridge.

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  9. Health & Medicine

    New Pfizer vaccine appears 90 percent effective against COVID-19

    Preliminary finds show one of the new coronavirus vaccines appears 90 percent effective at reducing symptomatic COVID-19 infections.

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  10. Animals

    Attack of the inner-cannibal mega-shark

    The outsized megalodon was a fierce terror that chewed its way across the oceans. It learned to kill even before it was born.

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  11. Health & Medicine

    When physicians and veterinarians team up, all species benefit

    When doctors for people and those for animals share their expertise, they can discover new ways to take better medical care of all species.

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  12. Animals

    A whale’s nearly four-hour-long dive sets a new record

    Cuvier’s beaked whales may rely on large stores of oxygen, a slow metabolism and the ability to tolerate lactic acid to go for hours without surfacing for air.

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