A light source powered by gravity. Coolness.
https://gravitylight.org/solution/
Re: Gravity Light.
2Aerobic, and depending on the weight, resistance training all in one.
Freedom is never more than one generation away from extinction. It must be fought for, protected, and handed on or one day we will spend our sunset years telling our children what it was once like in the United States where men were free.
- Ronald Reagan
- Ronald Reagan
Re: Gravity Light.
4My grandfather clock is having a fit right now over this brilliant development.