HS-ESS3-4

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

  1. 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
  2. Environment

    Cliff snails and rock climbers

    Rock climbers can accidentally wipe out communities of cliff snails.

    By Emily Sohn