The five most popular stories on CNN.com in the past 24 hours, according to NewsPulse.
Ex-NFL player had brain disease: Former NFL lineman Shane Dronett's transformation from an affable prankster, quick to flash a wry smile, to a person who was often frightened - and frightening - was subtle at first. The tragic culmination of his pain came when he committed suicide in 2009 at 38.
GoDaddy founder under fire for elephant hunt: The CEO of GoDaddy.com on Friday defended an online video that shows him shooting and killing an elephant in Zimbabwe.
12 killed in Afghan Quran burning protests: Twelve people were killed Friday in an attack on a U.N. compound in northern Afghanistan that followed a demonstration against the reported burning last month of a Quran in Florida, authorities said.
Last island prison in U.S. closes: For over a century the picturesque waters around McNeil Island had a job to do: they kept the inmates in. But after 135 years, Friday will be closing time at McNeil - and the water off its shores will no longer be needed to deter escaping prisoners.
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.