HS-LS2-8

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

  1. Animals

    Snot may be key to dolphins’ tracking of prey

    Dolphins produce clicking noises that bounce off of prey, like sonar, showing where they are. Mucus in the animals’ nasal passages may make that ‘sonar’ work.

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  2. Health & Medicine

    The cool science of hot peppers

    Why are chili peppers spicy? Why does anyone crave food that burns? Uncovering this fiery veggie’s secrets could help fight pain and obesity.

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  3. Environment

    Breathing very dirty air may boost obesity risk

    Breathing dirty Beijing air made rats heavier and less healthy than rats breathing clean air. Scientists now worry such polluted air may do the same thing to people.

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  4. Animals

    Parasites give brine shrimp super powers

    When infected with parasitic worms, brine shrimp survive better in waters laced with toxic arsenic, a new study finds.

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  5. Plants

    Before eating, Venus flytraps must ‘count’

    Researchers find that Venus flytraps respond to the number of times insects touch their sensory hairs. This tells them when it’s time to turn on digestion.

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  6. Health & Medicine

    Zika virus raises alarm as it spreads in the Americas

    Zika virus has been in Africa and Asia for decades. But is has now spread to the Americas. And it may cause a devastating birth defect.

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  7. Health & Medicine

    The truth about zits

    A common bacterium called P. acnes usually helps keep the skin healthy. But under some conditions, and especially during puberty, it can trigger painful, embarrassing outbreaks of unsightly pimples.

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  8. Plants

    Banana threat: Attack of the clones

    Researchers find that disease-causing fungi — all clones of one another — will continue to infect banana plants unless new steps are taken to stop their spread.

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  9. Agriculture

    Profile: A human touch for animals

    Temple Grandin uses her own autism to understand how animals think. The animal scientist is famous for fostering the humane treatment of livestock.

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  10. Chemistry

    Some air pollutants seep through skin

    The skin is the body’s largest organ. And it can let in as much or more of certain air pollutants than enter through the lungs, a new study finds.

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  11. Microbes

    Slime cities

    Biofilms are like tiny cities of bacteria — some harmless, others destructive. Scientists are learning how to keep these microscopic metropolises under control.

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  12. Brain

    Explainer: What is anxiety?

    Anxiety is the stress linked to worries about an upcoming event — one that may not even happen. But anxiety can affect the body every bit as much as does the stress provoked by staring down a hungry lion.

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