[Mark Gongloff] A $5 trillion idea to save energy

While we’re waiting around for cold fusion, space mirrors, matrioshka brains or whatever other complicated world-savers the tech wizards are cooking up these days to address soaring energy demand, a simple, effective solution is already available. It would create trillions of dollars in economic value and millions of jobs while also eliminating billions of tons of climate pollution and hundreds of thousands of premature deaths. This miracle technology is not a new form of energy but simply the m