Remembering journalist Cokie Roberts

Journalist Cokie Roberts' many admirers say she helped transform the role of women in broadcast news. Roberts, whose parents were both members of Congress, covered Washington politics for 40 years. She died on Tuesday at age 75 from complications related to breast cancer. "60 Minutes" correspondent Lesley Stahl remembers her trailblazing friend, and the most important thing Roberts told her about reporting.