Ever wondered if you could build a robot controlled by chemical reactions? [Marb] explores this wild concept in his video, merging chemistry and robotics in a way that feels straight out of sci-fi.

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Spritz luminol on your pennies and they’ll glow. Don’t worry! It’s not blood — your penny’s just been framed. We’ve shown you how to make your pennies glow with some heat and some acetone, but pennies ...