Promising new treatment for child cancer patients

A Publix grocery store in Florida sold the ticket for the biggest single payout in U.S. lottery history. This will be the sixth Powerball winner from the Sunshine State, which is more than any other. Ashley Potter reports.

This June marks 50 years since civil rights leader Medgar Evers was gunned down outside his home in Jackson, Miss. Randall Pinkston reports on his legacy.

A multi-million dollar payout from a winning lottery ticket saved a home from foreclosure in Chicago, and the family swears it's all because of their own guardian angel. Dean Reynolds reports.

Instead of celebrating graduation day, students at Hofstra University on Long Island are mourning a classmate accidentally killed by a police during a confrontation with an armed suspect. Terrell Brown reports.

Crews are just starting to rebuild hundreds of track south of New Haven, Conn., after a train collision Friday night sent 72 people to the hospital. The missing track will cause an ugly commute for thousands. Don Dahler reports.

President Obama's senior adviser, Dan Pfieffer, told "Face the Nation" the White House had only heard of the IRS probe this month -- but that has done nothing to quite conservative critics. Sharyl Attkisson reports.