6 Inventions That Are Older Than You Think
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From steam engines, to contact lenses, to biometric security based on someone's voice, there are a lot of inventions out there that are older than you think.
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Watch video 6 Inventions That Are Older Than You Think online without registration, duration 14 minute 24 second in high hd quality. This video was added by user SciShow 27 August 2024, don't forget to share it with your friends and acquaintances, it has been viewed on our site 226 thousand once and liked it 11 thousand people.