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 ...

Researchers develop a catalyst boosting lithium-air batteries with 0.52V, 960-hour stability, and 95.8% efficiency, advancing ...

We’re used to those high voltage projects which use a self-oscillating transformer circuit with a TV flyback winding, and we have even at times railed against them for their inefficiency ...