HS-LS2-8

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

  1. Animals

    Leapin’ eels! Video shows they attack with zaps

    When a predator threatens an electric eel from above, the animals leap up to deliver a shocking defense.

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  2. Ink leads way to terminating termites

    Inspired by a classroom experiment, a teen has built a way to lure troublesome termites to their death — using the power of ink.

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  3. Physics

    Gravity waves are seen again

    Four months after scientists announced the first detection of gravity waves, another set of ripples in spacetime have emerged. The new ones come from the clash of mid-size black holes in the distant universe.

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  4. Environment

    Uh oh! Baby fish prefer plastic to real food

    Given a choice, baby fish will eat plastic microbeads instead of real food. That plastic stunts their growth and makes them easier prey for predators.

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  5. Animals

    Eating toxic algae makes plankton speedy swimmers

    After slurping up harmful algae, copepods swim fast and straight — making them easy prey for hungry predators.

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  6. 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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  7. 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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  8. 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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  9. 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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  10. 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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  11. 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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  12. 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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