I am looking for research on a carcinogen that can either be an environmental or occupational hazard that has had relevance in the news in the past 5...

I am looking for research on a carcinogen that can either be an environmental or occupational hazard that has had relevance in the news in the past 5 years. I need enough information to be able to discuss the exposure limits and how individuals were exposed as well as the toxicological effects that were observed and possible. Any help is appreciated.