Desalination is often dismissed as being expensive and polluting. But advances in tech are putting it back on the agenda
It’s tipped to be the key environmental challenge of the century – and there’s plenty of competition for that accolade. Water. The planet has plenty of it, but most of it is unusable, locked up in salty oceans. But demand is soaring and the strains are starting to show, from China to Latin America, India to California.
Almost a billion people lack access to clean water, and the forecast is for this number to grow sharply in coming decades. Last year, Cape Town came dangerously close to running out of water. Even rainy England has been told: carry on like this and you’ll run out of the stuff in 25 years.
Even with advances in desalination technology, there will still be drawbacks to its widespread use
Link : Is there a beautiful, briny solution to the world’s clean water crisis?