Season 9 (1991)

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Aerobic Exercise; Swimming/Weightlifting; Luge/Skating; Softball/Racewalking
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October 12, 1991 • 30m

Episode 1 of Season 9 premiered on October 12, 1991

Solar Cars; Steroids; The Amazing Kreskin; Foot Fall Asleep; Miniature Horses
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October 19, 1991 • 30m

Episode 2 of Season 9 premiered on October 19, 1991

Murder Mystery; Ted Nugent; Bats
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October 26, 1991 • 30m

Episode 3 of Season 9 premiered on October 26, 1991

Cancer Causes; Frisbees; Computer Virus
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November 2, 1991 • 30m

Episode 4 of Season 9 premiered on November 2, 1991

Sewers; Cancer Treatments; Dick Cavett; Porcupines
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November 9, 1991 • 30m

Episode 5 of Season 9 premiered on November 9, 1991

Mapping the Dig Site; Dating the Bones; Assembling Dinosaur
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November 16, 1991 • 30m

Episode 6 of Season 9 premiered on November 16, 1991

Domed Stadium; Photosynthesis; Polarized Sunglasses; Amusement Park
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November 23, 1991 • 30m

Episode 7 of Season 9 premiered on November 23, 1991

Tears; Slinky Physics; Barcodes; Aspirin; Camels
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November 30, 1991 • 30m

Episode 8 of Season 9 premiered on November 30, 1991

Soviet Space; Sky Blue; Inventors Fair; Llamas
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December 7, 1991 • 30m

Episode 9 of Season 9 premiered on December 7, 1991

Acid Rain; Highjump; Potholes; Goats
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December 14, 1991 • 30m

Episode 10 of Season 9 premiered on December 14, 1991

Medical Quackery; Microwave Ovens; Dollar Changer; Golden Eagles
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December 21, 1991 • 30m

Episode 11 of Season 9 premiered on December 21, 1991

Telecommunications; Solar Eclipse; Blimp; Bear Cubs
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December 28, 1991 • 30m

Episode 12 of Season 9 premiered on December 28, 1991

Hip Replacement; Airbags; Paper Cuts; Potbelly Pigs
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January 4, 1992 • 30m

Episode 13 of Season 9 premiered on January 4, 1992