Apply scientific principles to design a method for monitoring and minimizing a human impact on the environment.

  1. Animals

    Salted butterflies

    The salt used on winter ice can alter the bodies of summer's butterflies. Males develop larger muscles and females get bigger brains.

  2. Animals

    Teen studies water strider disappearing act

    As a child, Xidian Zhang loved to play with water striders. Now they’re gone, and pollution may be the reason. This teen’s findings earned him a spot at the 2014 Intel International Science and Engineering Fair.

  3. Earth

    Thirst for water moves and shakes California

    Here’s a scary cost to pumping up groundwater to slake the thirst of crops in California’s Central Valley: It may uplift nearby mountains and trigger tiny earthquakes, experts find.

  4. Animals

    Electronics may confuse a bird’s ‘compass’

    Birds use Earth’s magnetic field to help guide them as they migrate. A new study suggests that electromagnetic radiation given off by some electronic devices may act like “noise” and confuse the long-traveling birds.

  5. 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.

  6. 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.

  7. Animals

    Birds versus windows

    Buildings in the United States can be deadly obstacles to flying birds. A new study estimates that as many as 1 billion birds die every year after colliding with windows. And low buildings — not skyscrapers — account for most of those deaths.

  8. 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.

  9. Animals

    First living fish leaves ‘endangered’ list

    Twenty-one years ago, a minnow facing a high risk of extinction was placed on the U.S. Endangered Species List. With help from scientists, the fish appears to have largely recovered. It’s the first ‘listed’ fish to do so.

  10. Life

    Caught in the act

    Scientists observe some evolutionary speed demons as they adapt over the course of just a few years to new environmental conditions.

  11. Animals

    Explainer: People can sicken animals

    Wildlife can sometimes become infected with germs shed by people.

  12. Climate

    Watching our seas rise

    Satellites, coral reefs, ancient Roman fishponds and sinking cities help us understand how humans are changing sea level.