Mix seawater with freshwater to generate clean energy
In the realm of what-will-they-think-of-next here is another clean energy technology that seems to have passed below the media radar. You can generate electric power from simply mixing salt water and clean water. It uses ion trasnport similar to btteries, but I won't get into the technical details. For those interested read the Science Daily article "Where rivers meet the sea: Harnessing energy generated when freshwater meets saltwater".
Remarkably it has "the potential to generate enough energy to meet up to 40 percent of global electricity demands "!
Of course there are many problems to solve but watch this space.