While a beetle in the desert is harvesting liquid water from moisture in the air, frost occurs when the humidity turns directly to ice. The researchers found that frost forms across a surface using ice bridges. When one droplet freezes, it sets off a chain reaction, and the nearby dew drops feed the ice as it grows across the surface. So, in taking a page from the beetle's play book, they decided to test out a method for controlling the formation of frost by placing hydrophilic dots far away from each other. When the dots are placed far enough, the ice bridges can't form, and frost is slowed from spreading, or stopped altogether.