Desalination

Arid Australia is investing big-time in a water desalination project that will attempt to ease some of the country's water woes.

Desalinization is a costly process because of the massive electricity needed to make it work. A Canadian startup believes it can cut that cost by 80% with a thermo-ionic process.

A large water desalination plant has been approved in Southern California, where water supplies are historically low and the population is high.