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How to Build Amazing Rubber Band Machine Gun

How to Build Amazing Rubber Band Machine Gun In this video I show how to build amazing rubber band machine gun from cardboard! Materials you need: cardboard, wood, popsicle sticks, rubber bands.
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Palm-sized microreactor solves portable power challenge for robots, drones, and AI

Researchers in Japan have developed a palm-sized Solid Oxide Fuel Cell (SOFC) microreactor. According ...