Great Quake Transformed Our Understanding of the Planet

Accidental geologist George Plafker was asked to survey Alaska after the world’s second-strongest earthquake hit in 1964. He made a discovery that transformed our understanding of the planet. But, at the time, prominent seismologists publicly opposed him. Guest: Henry Fountain, long-time science writer at "The New York Times" and author of "The Great Quake: How the Biggest Earthquake in North America Changed our Understanding of the Planet"