HS-ESS3-4

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

More Stories in HS-ESS3-4

  1. Chemistry

    Simple process destroys toxic and widespread ‘forever’ pollutants

    Ultraviolet light, sulfite and iodide break down these PFAS molecules faster and more thoroughly than other methods.

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  2. Climate

    Coastal cities around the world are sinking, satellite data show

    Of 99 coastal cities studied, nearly one-third are sinking. This leaves coastal communities increasingly vulnerable to rising seas.

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  3. Environment

    Bubbles could help remove trash from rivers

    One young engineer devised a way to make bubbles sweep away the trash floating down a creek, like the one in her backyard.

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  4. Health & Medicine

    Your bloodstream may be littered with the plastic you’ve eaten

    For the first time, scientists have found plastic particles circulating in human blood. No one yet knows whether those polluting bits might pose a risk to health.

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  5. Chemistry

    Let’s learn about cellulose

    The world’s most abundant natural polymer is finding all kinds of new uses, in everything from ice cream to construction.

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  6. Tech

    This sun-powered system delivers energy as it pulls water from the air

    The device not only produces electricity but also harvests water for drinking or crops. It could be especially useful in remote and dry parts of the world.

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  7. Climate

    UN report calls for two-pronged approach to slow climate impacts

    The latest IPCC climate change report underscores an urgent need for action to avoid the worst consequences of global warming.

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  8. Materials Science

    A disinfectant made from sawdust knocks out deadly microbes

    It’s made by pressure-cooking sawdust and water, is cheap and easy to make — and could lead to greener cleaning products than chemicals used today.

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  9. Chemistry

    New process can transform urban CO2 pollution into a resource

    Researchers have developed a liquid metal that breaks down carbon dioxide in the air, converting it from a climate threat into a valuable raw material.

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