Nearly 20 Republican and Democratic candidates have announced they're running for President. But can any of them be strong leaders and effective agents of change?
One man who went from relatively unknown to the White House with an ambitious agenda is Jimmy Carter. He was elected in 1976 and served one term. His post-presidential accomplishments have been incomparably productive and impactful.
We talked with President Carter, now 90 years old, about his formative years and political career. His new book is called "A Full Life."
