Big changes continue at Popular Science with editor in chief Cliff Ransom stepping down. Several top editorial staffers have left the publication in recent months, including executive editor Jennifer Bogo and design director Todd Detwiler. Ransom has served as editor in chief since December 2013, and joined Popular Science as executive editor in January 2011. He will continue on with the publication as an editor at large. Prior to Popular Science, Ransom worked for Arthur Frommer’s Budget Travel and National Geographic Adventure. Follow Popular Science on Twitter and ‘Like’ on Facebook for the latest discoveries in science and technology.