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The EPA's Energy Star Computers program is a joint
effort between the EPA and computer manufacturers to
reduce air pollution by promoting energy-efficient com-
puter products. The EPA estimates that use of Energy
Star computer products can save computer users up to
two billion dollars annually in electricity costs. In turn,
this reduction in electricity usage can reduce emissions of
carbon dioxide, the gas primarily responsible for the
greenhouse effect, and sulfur dioxide and nitrogen
oxides, which are the two primary causes of acid rain.
Computer users can also help to reduce electricity usage
and its side effects by turning off their computer systems
when they are not in use for extended periods of time—
particularly at night and on weekends.
Introduction
1-5
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