After 14 years in the spotlight, Pentatonix is changing its tune — but not permanently, the group told David Pogue. For their new album, “Christmas in the City,” they are not singing a cappella, using instruments to enhance their unique blend of voices. | CBS Sunday Morning

Karolyn Grimes, who played Zuzu in "It’s a Wonderful Life," says she didn’t have many lines, but people still remember her famous one about angels getting their wings — and she says she truly believes it. | CBS Sunday Morning