The perfect incentive for keeping your head in the clouds, "The Cloud Collector's Handbook" is a whimsical guide to the wonders of the sky. Throughout, author and cloud expert Gavin Pretor-Pinney catalogs a variety of clouds and gives readers points for spotting them and recording their finds. This fun and useful book features gorgeous full-color photographs that showcase a new type of cloud on every spread, from fluffy cumulus to the super rare horseshoe vortex to the wispy noctilucent clouds that hang at the fringes of space.