Susan Page of USA Today, Peter Baker of The New York Times, John Heilemann of Bloomberg Politics and Dana Milbank of the Washington Post discuss the latest moves by Republican presidential hopefuls. Source

Susan Page of USA Today, Peter Baker of The New York Times, John Heilemann of Bloomberg Politics and Dana Milbank of the Washington Post discuss the email scandal surrounding former Secretary of State Hillary Clinton and how it could imperil the inevitability of her likely presidential run in 2016. Source

Former GOP vice presidential nominee and ex-Alaska governor didn’t say when she tested positive but added that some other members of her family had, as well. Source

Researchers may have found a better way to make our natural immune systems fight cancer. And, a special problem study links parental praise to narcissism in kids. Doctors Jon LaPook and Holly Phillips join “CBS This Morning: Saturday” to tell us more about these developments. Source

First Lady Michelle Obama took her dance moves to “Ellen” on Thursday. CBSN’s Vladimir Duthiers and Kristine Johnson also get in on the fun. Source

CBSNews.com health editor Parvati Shallow explains recent studies showing that running too much can have health risks and that runners also live three years longer than non-runners. Source

Saturday at 9: A reality show producer gets 12 years in prison for killing his wife in Mexico — a crime he says he didn’t commit. Is it over? Then at 10: Help cops solve a 20-year-old cold case. A young woman killed, her family brutally stabbed. Someone out there knows something … is it you? Source

A bill up for debate in Virginia’s state senate pits felines against some feathery foes. Source

Limbitless Solutions co-founder Tyler Petresky created a bionic arm that actor Robert Downey, Jr., hand-delivered to a 7-year-old boy. Vladimir Duthiers and Kristine Johnson talk to Petresky about how he linked up with “Iron Man.” Source

When Chris Rosati, a North Carolina man with ALS, isn’t busy spreading acts of kindness he enjoys having a laugh. Watch him show off his love of tuxedos in a fun skit with CBS News’ Steve Hartman. Source