Steve Milloy filed a lawsuit against the Environmental Protection Agency for exposing people (particularly senior citizens, sick people, and the poor) to air pollution in an attempt to study its effects on humans. (Link and one more.) Milloy’s suit claims that the EPA paid people $12/hour to be exposed to PM2.5, a diesel-engine byproduct that the EPA itself states is so deadly that there is no healthy level of exposure. The lawsuit also claims that there was not proper informed consent, nor was the study even appropriate for human trial.
(Interestingly, if the EPA defends its actions by saying there is a safe level of PM2.5 for exposure, the lawsuit then asks that the EPA revise its regulations concerning the particulate matter to reflect that.)