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Wow! I Never Knew That! (Episode 7)

10 minutes 21 seconds

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Host Jeff "JJ" Johnson uncovers the origins of the bulletproof Kevlar vest, scuba diving, milk cartons, and wire coat hangers. He also explains why some coins have notched edges, why a wishbone is associated with good luck, what makes neon lights different colors, and the origins of the superstition against walking under ladders. Part of the "Wow! I Never Knew That!" series.

Media Details

Runtime: 10 minutes 21 seconds

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Wow! I Never Knew That!
Episode 1
11 minutes
Grade Level: 7 - 12
Wow! I Never Knew That!
Episode 2
11 minutes
Grade Level: 7 - 12
Wow! I Never Knew That!
Episode 4
11 minutes
Grade Level: 7 - 12
Wow! I Never Knew That!
Episode 6
11 minutes
Grade Level: 7 - 12
Wow! I Never Knew That!
Episode 7
11 minutes
Grade Level: 7 - 12
Wow! I Never Knew That!
Episode 8
11 minutes
Grade Level: 7 - 12
Wow! I Never Knew That!
Episode 10
10 minutes
Grade Level: 7 - 12
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Wow! I Never Knew That!
Episode 15
11 minutes
Grade Level: 7 - 12
Recently Added
Wow! I Never Knew That!
Episode 17
11 minutes
Grade Level: 7 - 12
Recently Added
Wow! I Never Knew That!
Episode 18
11 minutes
Grade Level: 7 - 12