inventions and inventors

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Ferris Wheel

02:00

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Ferris Wheel

By: HowStuffWorks

8.9

Robert H. Goddard - Liquid-Fueled Rocket

02:56

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Robert H. Goddard - Liquid-Fueled Rocket

By: Science Channel

8.9

Dry Cleaning

02:29

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Dry Cleaning

By: BrainStuff - HowStuffWorks

8.9

Emergency Contraception

02:47

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Emergency Contraception

By: AsapSCIENCE

8.9

Birth Control Pill

02:15

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Birth Control Pill

By: Stuff of Genius - HowStuffWorks

8.9

Arabic Numerals - Adoption in Europe

02:17

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Arabic Numerals - Adoption in Europe

By: Smithsonian Channel

8.9

Frozen Food - History

02:41

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Frozen Food - History

By: MinuteEarth

8.9

Isambard Kingdom Brunel - Facts

02:12

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Isambard Kingdom Brunel - Facts

By: History Answers

8.9

Harriet Williams Russell Strong

02:29

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Harriet Williams Russell Strong

By: Studies Weekly

8.7

Foldscope

02:02

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Foldscope

By: Studies Weekly

8.7

Wright Brothers - First Powered Flight

02:33

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Wright Brothers - First Powered Flight

By: Studies Weekly

8.7

Levi Strauss

02:22

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Levi Strauss

By: Stuff of Genius - HowStuffWorks

8.7

Invention of the Alarm Clock

02:39

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Invention of the Alarm Clock

8.6

Mosquito Coil - Mechanism

02:40

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Mosquito Coil - Mechanism

By: Science Channel

8.5

Alexander Graham Bell - Invention of the Telephone

02:54

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Alexander Graham Bell - Invention of...

8.4

Fidget Spinner

02:56

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Fidget Spinner

By: InformOverload

8.4

Thomas Edison

02:05

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Thomas Edison

By: CloudBiography

8.4

Thomas Edison - Phonograph

02:54

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Thomas Edison - Phonograph

8.4

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