national institutes of health. a stiff and rare punishment for scientific fraud. >> nicholas winton, of britain, who saved more than 650 jewish children from holocaust died at age 106. he araged for trains to carry children from prague to britain and kept quiet about his incredible work for a half century. >> amazing man and legacy. ahead, a seventh shark attack in south carolina. nationwide shark attacks are also on the rise. i will talk to a shark expert about what behind this uptick. >> fourth of july weeken. a north carolina beach community asking is it safe to go in the