Every afternoon we surf your sites for the most popular stories of the day. Here are the top headlines for May 31, 2011:

Washington Post: Experts say cellphones are possibly carcinogenic to humans, classify in same category as DDT

Washington Times: Navy too politically correct for ‘old salts’

Washington Examiner: Pro-Obama media always shocked by bad economic news

Bloomberg: Palin Shakes Up Republican Presidential Field While Keeping Mum on Plans

USA Today: Sports Illustrated alleges years of violations by Ohio State under Tressel

The Hill: 2012 presidential field lacks charisma

Politico: 2008? 2012 is so 2000-and-late

Roll Call: Building a Race Against Ryan

National Journal: Is the Mainstream Media Fair to Sarah Palin?

The New Republic: Facebook Fight

The Daily Caller: Weiner spokesman: ‘We’ve retained counsel to explore’ possible ‘civil or criminal actions’