The five most popular stories on CNN.com in the past 24 hours, according to NewsPulse:
Two states report radiation in milk: There is no health risk from consuming milk with extremely low levels of radiation, like those found in Washington state and California, experts said Thursday, echoing the U.S. Environmental Protection Agency
Found documents shed light on MLK killer: Recently discovered photos and letters are giving an inside look at the man convicted of assassinating the Rev. Martin Luther King Jr.
Missing cobra found alive in Bronx Zoo: An Egyptian cobra that drew thousands of Twitter fans has been found alive after it went missing for days from a New York City zoo.
Prince William won't wear a wedding band: Prince William is going to eschew the modern-day tradition of men wearing wedding bands.
'Albany Seven' claim $319M jackpot: Seven New Yorkers claimed a $319 million jackpot in the multistate Mega Millions lottery Thursday.