Scientists built a wood-based sponge that pulls water from air as dry as 15% humidity; it produced up to 1.72 litres per kg per day

• Image: AI-generated representation of a wood-based sponge that pulls water from air as dry as 15% humidityWater vapour is present almost everywhere, even in places where rivers, lakes and groundwater are scarce.
• The challenge has always been turning that invisible moisture into usable freshwater efficiently enough to make atmospheric water harvesting practical.
• Now, researchers have developed a wood-based material that can capture water from remarkably dry air.