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Learners observe and discuss a simple model of a wet scrubber, a device for cleaning industrial air pollution.

$10 - $20 per group Ages 8 - 14 10 to 30 minutes
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Learners observe two model atmospheres -- one with normal atmospheric composition and another with an elevated concentration of carbon dioxide.

$5 - $10 per group Ages 14 - 18 45 to 60 minutes