Winning the Nobel prize for economics

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We hear from a a Nobel prize winner - James Robinson - who has received his award today for research into why poor nations stay poor, and others thrive. We get the latest from the US election campaign trail with our reporter Monica Miller, as the focus turns to Pennsylvania. We also remember Lily Ledbetter, the US equal pay pioneer, who's just died at the age of 86. Ed Butler is joined by Maggie McGrath, the editor of Forbes Women, who is in New York, and Karen Percy, freelance business reporter in Australia.