Virginia teenager Mia Heller’s filtration system harnesses the power of ferrofluid, a magnetic oil that binds to microplastics in flowing water
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This High School Student Invented a Filter That Eliminates 96 Percent of Microplastics From Drinking Water
Virginia teenager Mia Heller’s filtration system harnesses the power of ferrofluid, a magnetic oil that binds to microplastics in flowing water
The Environmental Protection Agency defines microplastics as small particles measuring about 1 nanometer to 5 millimeters in size. These tiny particles pose a growing global concern as they infiltrate not just the environment but also humans and animals.
“Micro- and nanoplastics are getting into our bodies,” says
Matthew J. Campen, a toxicologist at the University of New Mexico in Albuquerque. A recent study revealed that microplastics have been found in
1,300 species, including humans. So far, these pollutants have been detected throughout the human body, from the brain to the
insides of bones; concentrations have also been found in testes, semen and the placenta of unborn fetuses.
Microplastic intake by organisms has
increased sixfold since 1990, and plastic production continues to grow. A 2025 University of New Mexico
study Campen co-authored revealed that concentrations of microplastics found in human brain tissue have increased by a sharp 50 percent in less than a decade.