A common industrial solvent still lingering in U.S. air may be quietly raising Parkinson’s risk. Credit: Shutterstock Highlights: Long-term exposure to a common industrial chemical may be linked to a higher risk of Parkinson's disease. Trichloroethylene (TCE) is a chemical used in metal degreasing and dry cleaning. Even though it has been banned for some uses, it remains in use today as an industrial solvent and lingers in air, soil and water across the U.S. Researchers estimated long-term TCE