Airborne contaminants can be a large problem in the workplace and even at home. In this DB research gases and educate your fellow classmates about the hazard and risk they may have. Provide a general overview of the contaminant and then a specific example and source; describe the problems that can result from this exposure. Are certain groups of people more at risk, such as children, pregnant women, or construction workers? End your discussion by telling us whether you knew about these problems beforehand, were you surprised, or any other thoughts you had? Focus on good sources, such as the sites mentioned in the book, OSHA, or EPA, and provide the citation at the end (more than a website, please).