make a big difference. >> dr. ashish jha, thank you for your insight as always. >> thank you. not all airline flight attendants are exactly happy with the cdc's new five-day isolation rules. you'll hear why from their union boss. that's coming up. and the stories that had people hungry for the truth this year. the most popular fact checks of 2021. such tree-mendous views. i'm at a moss for words. when a cough tries to steal dad's punchlines, he takes robitussin naturals powered by 100% drug-free ingredients. are you gonna leaf me hanging? soothe your cough naturally.