> Meet Frances Kelsey > Joined the FDA in 1960 > Got assigned a drug application > For a product sold worldwide > Thalidomide > The company wanted American approval > Said the evidence supported its safety > Kelsey wasn't convinced > Asked for scientifically reliable data > The company kept pushing > Sent more material > Pressured her to approve it > She kept asking for evidence > Kept the application from going through > Researchers then found a devastating link > Thousands of babies had severe birth defects > Their mothers had taken thalidomide > The US marketing application never passed > 1962, President Kennedy honors her work > Her stand helped change drug regulation An FDA reviewer asking for better evidence helped prevent a far larger American tragedy.