Compared to the mechanics of chemical batteries, the idea behind rail storage is simple. During periods of low electricity demand, power is dispatched from the nearby grid to pull a chain of weighted train cars uphill. And there they will sit—losing no power to...
1) universal symbols and colors for recycling metals, glass, paper, and all compostable materials. This is not unprecedented we have global symbols for toilets for men and women. And handicapped access. And stop signs. The UN could do this. Removing all...
