In this episode of The Neurochemistry Podcast, host Nawon Kim speaks with Dr. Andrew Hill about extracellular vesicles - tiny particles released by cells that can carry proteins, lipids, RNA, and other signals through the body. Together, they explore how these vesicles may contribute to the spread of misfolded proteins in neurodegenerative diseases such as Alzheimer’s, Parkinson’s, ALS, and prion disease, as well as their potential use as biomarkers and therapeutic tools. The conversation also touches on diagnosis, the blood-brain barrier, green lab practices, sustainability in research, and Andrew’s advice for young scientists building a career in science.