What’s next in the global response to Ebola?

What's next for curbing the Ebola epidemic in West Africa, where the death toll now exceeds 8,000? For one, drug companies have begun to experiment on humans in the affected region. Gwen Ifill talks about new approaches with Anthony Banbury, former head of the UN Mission for Ebola Emergency Response, and Delaware Sen. Chris Coons, who have both recently returned from West Africa.