Microplastics are inescapable. These miniscule plastic particles have been found at ancient archaeological sites, in freshly fallen snow on Antarctica, at the top of Mount Everest and deep in the Mariana Trench.

Microplastics have been found in brain tissue above the nose, suggesting a likely passageway for microscopic plastic shards and fibers to enter the brain after already being discovered in nearly every organ in the human body,

Scientists in Brazil found microplastics in the brain tissue of cadavers, according to a new study published Monday in the journal JAMA Network Open.