Yahoo /in-the-news/images/_logos/yahoo.svg A few grams a year, of course, are not nothing. "Because sponges are used frequently and undergo repeated abrasion, even relatively small releases can add up across millions of households," says __Don Thushara Galbadage__, associate professor at the Harris College of Health Sciences & Public Health at Texas Christian University. Fri, 21 Aug 2026 14:25:58 -0800 August 21, 2026 48a47195-f8d3-49ff-9fe3-b88b78a1bf8d Don Thushara Galbadage Harris College https://www.tcu.edu/directory/images/GalbadageDon-news-mobile.jpg https://www.tcu.edu/directory/profile/don-galbadage.php