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Nitrous Oxide
Learn about nitrous oxide, also known as "laughing gas," and its uses.http://www.chm.bris.ac.uk/motm/n2o/n2oh.htm
NOVA: The Most Dangerous Woman in America
Examine the case of Mary Mallon who was quarantined for life against her will in the early 1900s. You play the disease detective and learn about the history of quarantine.http://www.pbs.org/wgbh/nova/typhoid/
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