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"Learn how to safely open a D cell, and remove its sweet, sweet chemical innards. D cells are favorable as their large size facilitates investigation, and they contain the greatest magnitude of useable chemicals."

Bill Nye and the Discovery Channel give you the greatest discoveries in science. Host Bill Nye explores the most significant medical discoveries about the human body, from 1538 until the 1980s. From the first systematic examination of the human body through dissection in the 16th century to the 20th-century discoveries of how vitamins, insulin, and the antibiotics can help overcome deadly disorders and diseases; and modern-day discoveries about genetics and cancer and the causes of AIDS.