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  • National Geographic: Light Pollution

    Ever since the light bulb's invention 150 years ago, artificial light has illuminated homes, streets, and skies -- but with some unintended consequences. Learn about the major types of light pollution, their impact on human health, and how the worldwide glow from artificial light may continue to grow.

  • Captain Planet and the Planeteers: Make Garbage a Small Problem

    The Planeteers are called by Gaia to stop a new villain, Sly Sludge from polluting the Earth with another one of his trash dumping schemes. When the Planeteers confront Sludge, he tells them that he no longer dumps trash and has found the answer to the problem of waste management forever. He "demonstrates" by having a machine that shoots intense beams of light supposedly shrink the trash, but unbeknownst to the planeteers, it's all smoke and mirrors.