21st Century Inventions That Could Change Your Life

No Hassle Teeth Brushing

Tired of brushing your teeth? This device will do it for you! You put it in your mouth like a mouthguard and then turn it on. The combination of vibrations and bristles will help clean your teeth, and your hands are free to do whatever it is you need to do! Pretty ingenious, right? 

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The More You Know

  • Elephants comfort each other with chirps.
  • Jellyfish can sting even when they're dead.
  • The "Like" button on Facebook was supposed to be the "Awesome" button.
  • Maine is the only state that has a one-syllable name.
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