By Steve Brawner, © 2025 by Steve Brawner Communications, Inc.
You probably don’t need another huge global problem to worry about. At least Shannon Speir is doing something about this one.
Speir recently helped lead a study of how microplastics travel through streams, and how storms affect that process. She’s a Ph.D. and assistant professor of water quality in the University of Arkansas’ Topsoil and Environmental Sciences Department.
Plastics pollution may or may not be on your radar screen when there are so many other big, potentially terrible things happening. But it’s a very real problem nonetheless.
The world is producing hundreds of millions of tons of plastic each year, and it doesn’t biodegrade. Instead, it slowly disintegrates over many years into microplastics and smaller nanoplastics. These get into the food we eat, the water we drink, and the air we breathe.
As a result, these tiny plastics particles exist throughout our bodies. They get into our bloodstreams. They travel through a pregnant woman’s umbilical cord into her unborn baby. One recent study led by the University of New Mexico found that the microplastics found in deceased people’s brain tissue had increased by 50% from 2016 to 2024, and that people who had been diagnosed with dementia had more plastic than people who hadn’t. Continue reading →