Are you ever curious about the safety of sugar substitutes, air pollution, or your city’s tap water? Chemicals may make the world go around, but some of them can be harmful. So how do know which ones are safe? Toxicologists work in commercial industries, government health organizations, and research institutions to uncover, resolve, and communicate the hazardous effects chemicals may have on us and on our environment. As an industrial toxicologist with consumer products company Procter & Gamble (P&G), Greg Allgood has been responsible for ensuring the safety of products used by millions of people.