A sign advising to pray for rain hangs above an exhibit area at the 47th Annual World Ag Expo in Tulare, California, February 12, 2014. The expo takes place as a third year of drought plagues California farmers with the driest year on record and prompting California Governor Jerry Brown to declare a statewide drought emergency. Picture taken on February 12, 2014. REUTERS/David McNew (UNITED STATES - Tags: AGRICULTURE ENVIRONMENT)