The Cloud Appreciation Society (CAS) is a society founded was the United Kingdom in January 2005. This society aims to foster understanding and appreciation of clouds. CAS grown to over 42,000 members worldwide from 115 different countries. Its founder, Gavin Pretor-Pinney, asserts that you do not need to plan an exotic trip to find creative inspiration. Rather, just look up. As he shares charming photos of nature's finest aerial architecture, Mr. Pretor-Pinney calls for us all to take a step off the digital treadmill, lie back and admire the beauty in the sky above.