Although jet engines are theoretically quite simple devices, in reality they tread a fine line between working as intended and vaporizing into a cloud of lethal shrapnel. The main reason for this ...

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.

Enzymes with specific functions are becoming increasingly important in industry, medicine and environmental protection. For example, they make it possible to synthesize chemicals in a more ...