Very cool centuries old nearly forgotten cement laminate technique for building vast arches - without reinforcing steel, and without massive support structures during construction.
- Danny Thorpe
via Bookmarklet
This is a rechargeable oxygen + carbon + lithium compound, not the "air fed" zinc oxide single-use battery. The researchers estimate it could be 5 years before this comes to market. Not if Elon Musk (Tesla, SpaceX) gets his hands on it!
- Danny Thorpe
via Bookmarklet