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A British research project known as Catalytic Clothing focuses on fabrics that use existing technology to purify the air. Tony Ryan, a professor of physical chemistry at the University of Sheffield, and Helen Storey, a fashion designer, run the project. They have created prototypes for dresses and jeans treated with an additive that's a photocatalyst (a light-triggered energy source) that breaks down airborne pollutants. In the future, the creators aim to have the photocatalyst delivered to clothes through detergents or fabric conditioner. There needs to be mass adoption of the technology for it to make a meaningful difference in air quality. Ryan and Storey hope that the additive can be affordable enough for their ambitious plan to become a reality.