May 23, 2022
The team developed a low-cost gel film made of abundant materials that can pull water from the air in even the driest climates. The materials that facilitate this reaction cost a mere $2 per kilogram, and a single kilogram can produce more than 6 liters of water per day in areas with less than 15% relative humidity and 13 liters in areas with up to 30% relative humidity.
https://news.utexas.edu/2022/05/23/low-cost-gel-film-can-pluck-drinking-water-from-desert-air/