Professor Omar Yaghi, a chemist from the University of California, Berkeley, who won the Nobel Prize in Chemistry in 2025, has developed a machine that can harvest up to 1,000 liters of clean water every day directly from the air.
This technology could be a life-changing solution for countries and regions that face extreme drought and water shortages. The device, created by Yaghi’s company Atoco, can work even in places where humidity levels are below 20%, an achievement that water generation systems can’t achieve.
Yaghi’s device is more than just an innovation—it could be a solution to the global water crisis. According to the United Nations, over 2 billion people worldwide lack access to safe drinking water. Water scarcity affects millions, with many regions facing months without enough clean water.
This new technology is especially crucial in these areas, where conventional solutions like desalination plants are either too expensive or harmful to the environment. Yaghi’s water harvester is eco-friendly and portable, providing clean water where it’s needed most.
The secret to Yaghi’s water harvester lies in a field of chemistry, his development called reticular chemistry. This technology utilizes Metal-Organic Frameworks (MOFs), which are specialized materials that function like highly sophisticated sponges.
MOFs are highly porous materials that trap water molecules in their tiny pores. These materials are engineered at a molecular level to have a huge surface area, which makes them extremely effective at absorbing water. In fact, just a few grams of MOFs can cover the area of a football field.
As air passes through the device, the MOFs absorb the water molecules. When exposed to sunlight or low-grade thermal energy, the trapped moisture is released as vapor. This vapor is then condensed into liquid water, ready for use. Normal atmospheric water generators that require a lot of electricity to cool the air, Yaghi’s machine runs off-grid using just the heat from the sun, making it much more sustainable.
Yaghi’s invention has the potential to change the way we think about water generation. It is capable of harvesting clean, drinkable water from the air even in dry regions, with humidity as low as 20%. This means that areas with little or no access to natural water sources could still have a reliable water supply.
For Yaghi, the motivation behind his work is deeply personal. Growing up in a refugee community in Jordan, Yaghi remembers what it was like to live in a house without running water. Water was delivered by truck, and whenever the truck arrived, there was a rush to fill containers before the supply ran out. Yaghi’s experience with water shortages inspired him to find a solution to the global water crisis.
During a recent field test, Yaghi explained, “The science is here; what we need now is the courage to scale these solutions.” Yaghi believes that his invention can be the solution to many of the world’s water problems. He envisions a future where every household can produce its own drinking water, much like how homes can generate their own electricity with solar panels. This would reduce the dependence on centralized, vulnerable water systems.
The most remarkable feature of Yaghi’s water harvester is that it is portable and can be used in disaster zones or areas with little access to clean water. The device is roughly the size of a 20-foot shipping container, making it easy to transport and set up in areas where traditional infrastructure is lacking.
In areas like the Caribbean, where hurricanes have destroyed homes and infrastructure, this device could provide immediate relief by supplying clean drinking water to communities that have lost access to their water sources.
Yaghi’s technology could also be useful in remote desert areas where access to water is limited. It provides an alternative to water generation methods, such as desalination plants, which are expensive and energy-intensive. Yaghi’s water harvester, in contrast, operates without requiring a power grid and uses only the energy from the sun to function. This makes it a more affordable and sustainable option for areas with limited resources.
Desalination has been used for decades as a way to turn seawater into drinking water, particularly in coastal areas. However, desalination comes with its own set of challenges. It requires a large amount of energy and creates salty waste that can harm marine ecosystems. Yaghi’s water harvester offers a cleaner, more sustainable solution. By capturing moisture directly from the air, it avoids the environmental problems associated with desalination.
