Turns out they've been exposing people to harmful pollution at UNC-CH in an EPA study.
"In answer to the lawsuit, EPA included a declaration in which the clinical studies coordinator claims to verbally warn study subjects right before experimentation, “There is the possibility you may die from this.” In addition to the shocking nature of this “warning,” even if it were acceptable to risk the lives of human study subjects for the sake of science, such a warning would need to be in writing, according to the Common Rule."
Yikes.