7/31: Signs of an economic upturn; Michael Phelps breaks Olympic medal record

      |Is there an economic upturn on our doorstep? Home prices are up. Incomes are rising. But, Americans are still reluctant to spend; Also, Michael Phelps breaks the all-time record for Olympic medal wins; And, Seth Doane reports on what is making rare shark sightings more common off the coast of Cape Cod.

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