You can use HYDROGEN PEROXIDE to get rid of armpit stains, to clean cookie sheets, as a miracle cleaner in your kitchen and bathroom, and to make your own “oxi clean”. This stuff is amazingly versatile!
How to Make Your Own Storm Glass To Predict the Weather
Your own weather station Admiral Fitzroy, captain of Darwin's Beagle is credited with this storm glass which predicted weather according to the behavior of crystals in a solution. For ex. Clear meant clear and bright weather, cloudy glass with small stars meant thunderstorms.
Transparent concrete, by Mexican students Joel Sosa and Sergio Omar Galván. This team of material innovators claim that their “concrete” is 30% lighter than normal concrete and lets through 80% of the light!