Desalination Is Booming. But What About All That Toxic Brine?

Desalination Is Booming. But What About All That Toxic Brine?

Bad news for the environment, to be sure, but things aren’t altogether dire: Desal tech is rapidly evolving, so plants are getting far more efficient, both in the brine they produce and the energy they use.

The Beauty and Danger of Australia's Salt Lakes

The Beauty and Danger of Australia's Salt Lakes

Photographer Leah Kennedy documented the region's resulting salt lakes in her series Salis.Related StoriesLaura MalloneeGet Lost in Australia's Vast Salt Lake With These Dreamy PhotosDoug BierendPhotos of Lakes Turn Psychedelic After Soaking in Their WatersAarian MarshallHow to Derail a Runaway Train (and Save Australia)The salt lakes predate human settlement, but over the past hundred years so-called "secondary salinization" has made the lakes’ natural chemistry even more extreme.

Vital for life, heat and power – what you never knew about salt water

Vital for life, heat and power – what you never knew about salt water

To prevent the worst effects of climate change we need to extract carbon dioxide (CO₂) from the air and store it on a huge scale. Deliberately exposing large volumes of air to water containing potassium ions (similar to salt water) can effectively capture CO₂ very cost-effectively.