3. Ronald M. Evans (Biological Chemist)

Ronald M. Evans is a prominent biological chemist known for his groundbreaking research on nuclear hormone receptors, which are proteins that regulate how our body responds to hormones like thyroid hormone and steroids. His work has significantly advanced our understanding of gene expression and cell signaling, which are crucial for numerous biological processes. Evans's discoveries have implications for treating various diseases, including diabetes, obesity, and cancer, as they help illuminate how hormones influence metabolism and growth. His contributions have earned him prestigious awards, highlighting his influence in both biology and medicine.