Evaluate competing design solutions for developing, managing, and utilizing energy and mineral resources based on cost-benefit ratios.

  1. Agriculture

    Your food choices affect Earth’s climate

    Producing food can put a lot of climate-warming pollutants into the atmosphere. But some foods, especially meats, contribute more than others.

  2. Tech

    The road less worn

    Two teens have found a new use for old tires. By grinding them up and adding them to asphalt, the old rubber can create stronger, longer-lived roads. And the bonus: The process recycles tires that might otherwise have been burned, creating pollution.

  3. Environment

    China exports pollution alongside goods

    Many companies have moved the plants that make their products to developing countries, such as China. But the pollution linked to making those products can travel around the world.

  4. Earth

    Mining metals amidst seafloor animals

    Miners may need to get their feet — and everything else — wet as they carefully seek out loads of copper and other valuable natural resources.

  5. Chemistry

    Plant-powered plastics

    Scientists are using green materials to create more Earth-friendly plastics.

  6. Fossils

    Downsized dinosaurs

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

  7. Tech

    Cold house, hot house, green house

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

  8. Environment

    A newspaper’s hidden cost

    Getting a newspaper electronically would be much better for the planet than receiving the paper version.

  9. Tech

    Drawing energy out of wastewater

    Microbes in a fuel cell can generate electricity from plant and animal waste in water.