HS-ESS3-4

Evaluate or refine a technological solution that reduces impacts of human activities on natural systems.

  1. Animals

    Big fish in troubled waters

    Overfishing cuts number of large predator fish in the ocean.

    By Stephen Ornes
  2. Materials Science

    Battery powered to heal

    With its own first-aid kit, this battery can really keep going.

    By Stephen Ornes
  3. Environment

    Floor of Gulf got slimed

    Oil from BP spill was likely dragged down by bacterial goo.

    By Stephen Ornes
  4. Environment

    Planting seeds for better plastic

    Scientists are working to put the bio in plastics.

    By Emily Sohn
  5. Fossils

    Downsized dinosaurs

    Island living may have led to miniature versions of giant dinosaurs.

    By Emily Sohn
  6. Tech

    Cold house, hot house, green house

    Saving energy at home requires paying attention to the building's windows, walls, and roof.

    By Emily Sohn
  7. Environment

    Alien invasions

    Around the world, plants, animals, fungi, and other life forms are ending up in places where they don't belong.

    By Emily Sohn
  8. Environment

    A vulture’s hidden enemy

    Vultures may be getting a deadly dose of medicine from the carcasses they feed upon.

    By Sorcha McDonagh
  9. Plants

    City trees beat country trees

    Cottonwood trees grow better in New York City than in rural places around the state.

    By Emily Sohn
  10. Humans

    Digging for ancient DNA

    Soil has yielded identifiable DNA of animals and plants that lived up to 400,000 years ago.

    By Emily Sohn
  11. Environment

    Cliff snails and rock climbers

    Rock climbers can accidentally wipe out communities of cliff snails.

    By Emily Sohn