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23 Episodes
S23 E1 - Are You a Racist?
S23 E2 - Genesis
S23 E3 - Bitter Cold
S23 E4 - The Mould, the Myth and the Microbe
S23 E5 - Outbreak: The Microbe Masters the Mould
S23 E6 - Science...Fiction?
S23 E7 - The Children of Eve
S23 E8 - The New Face of Leprosy
S23 E9 - Hi-Tech à la Française
S23 E10 - In the Wake of HMS Sheffield
S23 E11 - AIDS: A Strange and Deadly Virus
S23 E12 - The Case of the Frozen Addict
S23 E13 - Nice Guys Finish First
S23 E14 - The Men Who Bottled a Cow
S23 E15 - Twice Five Plus the Wings of a Bird
S23 E16 - What Makes an Animal Smart?
S23 E17 - A Handful of Sugar with a Pinch of Salt
S23 E18 - Uranus Encounter
S23 E19 - Who Built Stonehenge?
S23 E20 - Episode 20
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