By Christopher Dawson, Jennifer Grubb and Ashley Vaughan, CNN
A 7.8 magnitude earthquake rocked Nepal with devastating force Saturday, killing more than 3,800 people and injuring at least 7,000. Many more are unaccounted for as the search for survivors continues. Google has launched a People Finder tool to help victims touch base with friends and loved ones. It allows users to look for victims or post information about people, and it also works by text messaging.