Why saving power makes economic sense in the transition era

In the face of the energy transition, producing energy will be much more expensive than energy efficiency, which is still ...
Tech Xplore on MSN

Harvesting heat and electricity from the sun, when you need it

Solar energy is abundant and frustratingly ill-timed. A sunbeam can become either electricity (useful for running modern life) or heat (useful for keeping spaces warm). But conventional solar hardware ...