Football stadiums using AI to keep fans safe; the band Portugal. The Man; actors Zac Efron, Jeremy Allen White, Harris Dickinson and Stanley Simons; a Miami teacher who went viral for teaching math and life lessons; the Philadelphia Boys Choir.

The year in numbers; actress Greta Lee; places to travel in 2024 with Jacqui Gifford; the importance of Joy with author Niro Feliciano; chef Danny Lee.

Last-minute holiday shopping tips; a military service dog retires and is reunited with his long-time handler; the National Children's Chorus; chef Darnell Ferguson.

Entertainment news: the year in review; holiday gift guide: last-minute gift ideas; chef Zane Holmquist makes peppermint blondies and coconut hot chocolate.