Heat Waves and Taiwan
Hosted by Jane Pauley. In our cover story, David Pogue explains the "heat dome" behind record-breaking temperatures. Also: Robert Costa interviews GOP presidential candidate Chris Christie, former governor of New Jersey; Elizabeth Palmer examines the threat to Taiwan's democracy posed by nearby China; and David Martin witnesses troops training in mine-clearing exercises. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.