December 16th, 2014 at 11:46 AM
What was the best invention from the past 300 years that doesn't use electricity?
Doesn't use electricity? |
December 16th, 2014 at 11:46 AM
What was the best invention from the past 300 years that doesn't use electricity?
December 21st, 2014 at 7:59 PM
I'm not sure if this is from the past 300 years, but the pillow?
April 20th, 2015 at 5:20 AM
Carbon nanotubes don't use electricity, but they're uber strong and have a lot of possibilities! ^_^
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![[Image: 56NBthe.png]](https://i.imgur.com/56NBthe.png)
