Caption: MIT researchers have developed a solar-powered desalination system that is more efficient and less expensive than previous methods. In this schematic, a confined water layer above the floating thermal insulation enables the simultaneous thermal localization and salt rejection.
![Solar-powered system offers a route to inexpensive desalination](https://cdn-ak-scissors.b.st-hatena.com/image/square/d17e3cf822daff5258b9853fe0583497b554cb4e/height=288;version=1;width=512/https%3A%2F%2Fnews.mit.edu%2Fsites%2Fdefault%2Ffiles%2Fimages%2F202202%2FMIT-Reject-Salt-01-press.jpg)