Hosted by Jane Pauley In our cover story David Pogue explains the heat dome behind record-breaking temperatures Also Jane Pauley talks with actor Michael J Fox about his Parkinson's 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 art com privacy and California Privacy Notice at https art com privacy do-not-sell-my-info
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