Mia Heller Built a Membrane-Free Water Filter in Her Garage at 18. It Removes 95.5% of Microplastics.
Mia Heller was not looking for a science fair project when she picked up her local newspaper a few years ago. She was just a teenager in Warrenton, Virginia, scanning headlines over breakfast. But one article stopped her cold. It reported that her neighborhood’s tap water was contaminated with PFAS chemicals and microplastic pollution, and …