Animals
People and animals sometimes team up to hunt for food
Dolphins working with people to catch fish recently made a big splash. But humans have a long history of cooperating with other animals.
HS-LS2-8
Evaluate the evidence for the role of group behavior on individual and species' chances to survive and reproduce.
More Stories in HS-LS2-8
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AnimalsAnalyze This: Puppies naturally mimic human actions
Unlike cats, whose ancestors hunted alone, dogs evolved from a species that hunted in packs. Being social might explain why pups copy humans.
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AnimalsThis biologist uses microwave radiation to save endangered species
Pei-Chih Lee works to preserve genetic material that can help researchers learn more about endangered animals, such as pandas and clouded leopards.
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AnimalsRandom hops always bring jumping beans to shade — eventually
It’s not fast, but jumping beans use randomness to maximize their chances of getting out of the sun’s heat.
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Health & MedicineNew brain scans may show if a concussion has not yet healed
Concussions change certain brain waves, and delta waves may be the best signs of when teens can return to competitive sports.
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AnimalsPrairie voles can couple up even without the ‘love hormone’
Scientists thought the chemical oxytocin was required to make prairie voles mate. They were wrong.
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Health & MedicineExplainer: Why it’s easier to get sick in the winter
Low humidity helps viruses survive, and cold weather blunts some of the body’s immune responses — making colds and other viral infections more likely.
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EnvironmentProtecting forests may help head off future pandemics
Hungry bats are more likely to shed harmful viruses to people or livestock when they spread out to hunt food. Conserving forests may limit this risk.
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BrainThe pandemic prematurely aged teens’ brains
A small study showed certain structural changes that appeared three to four years early. Normally, premature aging of the brain is not a good sign.
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AnimalsBumblebees go out of their way to play
Young bumblebees roll wooden balls and go out of their way to do so. This suggests they play like other animals do.