NEW VIDEO: A hidden camera catches a California scientist poisoning his co-worker’s water bottle, leaving her with years of serious health problems and emotional distress. Rong Yuan suffered severe vomiting, hair loss and mysterious illnesses for more than two years before discovering her water contained cadmium at levels reportedly 3.5 million times the federal limit. David Xu was initially charged with attempted murder but received just two years of probation after pleading guilty to poisoning, while Yuan says she continues to suffer health problems and can only work part time. Despite the severity of the crime, the lasting impact on Yuan and objections from prosecutors, a judge granted Xu’s request to expunge his felony conviction, leaving the victim questioning how he could be given a second chance while she continues to live with the consequences.