Many towns have little rain. It is difficult for people to get water. Scientists say harvesting water from fog could be an answer. The researchers collected fog water on large screens. Drops of fog water stick to the screen. The water then drips into tanks below. It is a cheap and easy way to collect water in dry areas.

The researchers tested fog harvesting in a desert town which gets 5 mm of rain a year. People get water delivered by truck. Fog harvesting could change this. It could be a "practical water resource". A researcher said "water from the clouds" could give cities access to clean water.