How to Grow an Ebola Vaccine with a Tobacco Plant

PBS News Hour: What looks like an ordinary greenhouse is actually an around-the-clock Ebola vaccine factory. At a facility in Kentucky, plants are being injected with a protein in order to spur them into producing one of the three antibodies used in the experimental drug ZMapp. Special correspondent Mary Jo Brooks reports on how bio-pharming is helping to ramp up the speed of drug production to fight the disease.