'Science is everything' says Shannon Walker, who is living her childhood dream
This week on Plugged In with Greta Van Susteren, as the World Health Organization marks World Immunization Week, we look at what's behind the alarming outbreak of measles cases. Guest host Jim Malone gets the straight facts from a medical expert and finds out what individuals and local officials are doing to combat the problem.
Veteran Delaware senator and two-term vice president announced that he is running for president
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