Will Smith explores Earth's wonders in new docuseries

On today's What to Watch: Will Smith travels the globe exploring the world's greatest wonders and secrets on the docuseries Welcome to Earth; CSI: Vegas wraps up its first season with a big case that hits close to home; and Chicago Med, Fire, and P.D. have a mix of drama and fun in their winter finales. Tab Time star Tabitha Brown tells us what she's watching. Plus, entertainment headlines — including first footage from the docuseries Secrets of Playboy, and Outer Banks renewed for a third season — and trivia. More at ew.com, ew.com/wtw, and @EW. Host: Gerrad Hall (@gerradhall); Editor/Producer: Joshua Heller (@joshuaheller); Writer: Tyler Aquilina (@tyler_aquilina); Executive Producer: Shana Naomi Krochmal (@shananaomi). Learn more about your ad choices. Visit podcastchoices.com/adchoices