‘Molecular Sponge’ Machine Sucks Water from the Driest Desert Air

Could Be a Boon for 2 Billion People Where Water Is Scarce or Unsafe

For people in regions that are arid or where clean drinking water is hard to find, whether through pollution, parasite contamination, or disaster, the new technology could be a lifesaver. Pixabay

In a breakthrough that could redefine water security for the world’s most arid regions, Prof. Omar Yaghi—one of three 2025 Nobel Prize winners in Chemistry—has unveiled a revolutionary machine. It is capable, depending on the size at which it’s constructed, of extracting up to 1,000 liters of clean drinking water daily from the atmosphere.

Unlike traditional dehumidifiers that fail in dry climates, this device operates in humidity levels as low as 20%, making it a potential lifeline for the 2 billion people globally who currently lack access to safe or sufficient water.

The heart of his innovation lies in metal–organic frameworks (MOFs), a class of synthetic, porous materials Yaghi pioneered, building on the work of the two other 2025 Nobel chemistry laureates, Richard Robson and Susumu Kitagawa, whose earlier studies of coordination networks and porous polymers made the new field possible. MOFs act as “molecular sponges” through an internal surface area so vast that if the internal area of a single gram were stretched out it would cover a football field. By “reimagining matter” and then engineering the “chemical stickiness” of these pores and tunnels, Yaghi created a material that specifically attracts water molecules while ignoring other gases.

The process is remarkably efficient and off-grid. During the night, the MOF granules absorb moisture from the air. When the sun rises, ambient solar heat triggers the release of the trapped water, which then condenses into liquid. During successful field tests in California’s Death Valley, the machine proved it could reliably produce water in one of the hottest, driest places on Earth.

The Plight of the Water-Deprived

In his Nobel Prize banquet speech, Yaghi, age 61, reflected on the personal drive motivating his work. He recalled how he grew up in a refugee camp in Jordan, without running water or electricity, where he and his family had to wait for government-delivered water every week or two. “I remember the whisper through our neighborhood—‘the water is coming’—and the urgency as I rushed to fill every container I could find before the flow stopped,” said Yaghi, a chemistry professor at the University of California at Berkeley.

The technology, commercialized through Yaghi’s company Atoco, is being deployed in shipping-container–sized units. These are particularly vital for anywhere prone to hurricanes, earthquakes, and other natural disasters that often destroy centralized water infrastructure or maroon communities entirely. Such units could also be a lifeline for areas that are arid or drought-stricken. Because the machine requires no external power or brine-producing desalination, it offers a sustainable “personalized water” future where households or villages can be entirely self-sufficient.

Discussing the broader impact of this new MOF science, Yaghi emphasized the environmental stakes: “The key development here is that it operates at low humidity, because that is what it is in arid regions of the world.”

As climate change intensifies droughts and storms, the ability to pull water from “thin air” without taxing the environment marks a monumental shift. Yaghi added that, by scaling this technology, the world could eventually become one where access to water can no longer be threatened by infrastructure failure or political or ethnic conflict, because it can be harvested directly from the sky.