Petrified wood is one of the most sought-after materials in the world for both its aesthetic value and its scientific value. But in Indonesia, miners who risk their lives to dig it up barely make ...

How to Make a Free Energy Emergency Mobile Phone Charger - Salt water battery. Free Energy salt water Generator to charge your Mobile Phone.Portable charger.

Researchers develop a yarn-like battery that operates in seawater, powering LEDs and timers, offering flexible energy ...

To show how it works, the researchers created a fishing net from the battery yarn and soaked it in seawater. When charged, ...

Most batteries are rigid and incompatible with water. But people work and play in oceans and estuaries, and they could ...