Maggie Daley tripled the average survival rate for metastatic breast cancer. We look at why not all breast cancer prognoses are alike, and find out about the latest treatment developments.

Richard M. Daley and Maggie Daley

Maggie Daley's life was celebrated Monday at Old St Patrick's Church. Former Mayor Richard M. Daley sat surrounded by his family, along with scores of dignitaries and ordinary Chicagoans who gathered to pay their respects. Elizabeth Brackett reports.

Maggie Daley. Image credit: AP

Maggie Daley, the wife of former Chicago Mayor Richard M. Daley, has died at age 68, after a long battle with metastatic breast cancer. We talk about her life and her legacy on this special edition of Chicago Tonight.