To study the role of artificial clouds on climate, the team needed a period of time when civil aviation was scarce in order to compare the atmosphere with and without contrails. (scientificamerican.com)
Dan Cziczo and colleagues of the Pacific Northwest National Laboratory in Richland, Washington, created artificial clouds in the laboratory to explore the ice nucleation efficiency of various particles. (newscientist.com)
Semple's «Happy Clouds» will also be making a regular appearance as the artist floods the Denver skyline with thousands of huge artificial clouds in the shape of smiley faces. (fadmagazine.com)