Stephen Petranek is Co-Founder and President of Arc Programs. He is an award-winning editor of major publications and a writer and a television producer and presenter. He is currently the editor-in-chief of Breakthrough Technology Alert, a newsletter published by Agora Financial.

He served as Group Editor-in-Chief of The Weider History Group from 2006 to 2013, in charge of American History, Military History, World War II, Wild West, Civil War Times, among others, plus the website Historynet.com.

For nearly 10 years he was editor-in-chief of Discover Magazine. He was the founding editor-in-chief of Time Inc.’s This Old House; Senior Editor at Life; the editor of the Washington Post Magazine; and editor of The Miami Herald’s Tropic Magazine. He has appeared on network and cable TV and was twice a TED speaker.

He has organized and led numerous conferences, including the 2004 TED salon on global warming. He was a on the BioAgenda board and spoke and led roundtables at the BioAgenda summits. He serves on the TED science advisory board and has been an advisor to TED’s curator, Chris Anderson.