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We currently rely on nonrenewable sources, such as oil, for most of our fuel. Scientists are working on new fuels from crops and other materials to help ease future dependence on nonrenewable resources.

Produktbeschreibung
We currently rely on nonrenewable sources, such as oil, for most of our fuel. Scientists are working on new fuels from crops and other materials to help ease future dependence on nonrenewable resources.
Autorenporträt
Frank Muschal lives in Chicago with his elderly cat, Agatha. (â oeShe's older than laptops and cell phones, but I'm older than TV.â ) He's been writing and editing for textbook publishers for thirty years and has no guilt feelings about tormenting students all that time. Besides writing, Frank keeps busy playing tennis, riding horses, and fumbling around on his guitar. â oeI'm no rock star, â he says. â oeI just want to make me more interesting to myself.â