In the video, "immigrant workers where the hazardous jobs are", global migration was said to have dramatically increased over the past decade, with numbers over. 200 million transnational and over 1 billion total migrants globally - true. In the article, "alzheimer"s preventative drug hope", researchers discovered a neurostatin that could be used as a preventative measure to stop the condition appearing in the first place - true. In the video, "public health outbreaks", dr. tomas j. arag n defined an epidemic as an occurrence of more cases than would be expected for a time and place. In the ted video, "let"s quit abusing drug users", carl hart, associate professor of. Psychiatry and psychology at columbia university, believes that 80-90% of people who use drugs are not drug addicts - false. In dr. mariam d"s video about hiv stigma: hiv stigma is linked to higher stress levels - true.