“More than 2 billion people worldwide lack access to clean drinking water, with global warming and competing demands from farms and industry expected to worsen shortages. But the skies may soon provide relief, not in the form of rain but humidity, sucked out of the air by ‘atmospheric water harvesters.’ The devices have existed for decades but typically are too expensive, energy-hungry, or unproductive to be practical. In preliminary, unpublished tests, Yaghi says, prototype devices using a tweaked version of his team’s MOF can produce 200 liters of water per kilogram per day with only small amounts of added heat. Yaghi has licensed the technology to Atoco, which is exploring using it to generate water to cool data centers, harnessing their waste heat to speed the cycling. Atoco plans to open pilot scale facilities in Texas and Arizona next year to test scaled-up versions.”From Science.