Rises at 5:32 AM with 15:01 of sunlight, then sets at 8:33 PM
Rises at 5:32 PM with 10:14 of moolight, then sets at 3:46 AM
Jun 20, 2013; 5:00 AM ET What was once difficult to measure is now being done. Researchers have found a new way to determine the amount of evaporation globally. Valerie Smock explains how it's done.