Desalination:
https://www.goodnewsnetwork.org/solar-tech-makes-desalinating-seawater-cheaper-than-producing-bottled-water/

Good News Network
New Solar Tech Makes Desalinating Seawater Cheaper Than Producing Bottled Water
Engineering teams around the world have been attempting to develop new methods of seawater desalination.
3July 5, 2026 378