Annabelle Rayson’s journey into water science began on the shores of Lake Huron and has grown into an award-winning pursuit of global impact. A student at Harvard University and winner of the 2022 Stockholm Junior Water Prize, Annabelle shares how her childhood curiosity about the Great Lakes evolved into groundbreaking research and real-world problem solving. She describes her innovative “Plankton Wars” project—using native zooplankton to reduce harmful algal blooms—and how it earned her international recognition. Annabelle also reflects on her internship at Xylem’s Reservoir Center, where she worked on projects spanning water quality monitoring, nutrient sensing, and community engagement. From studying methane emissions in wetlands to investigating heavy metals in drinking water, her story captures the next generation of scientific leadership and passion driving solutions for clean, sustainable water worldwide.This episode is a collaboration with the Reservoir Center in Washington, D.C. where waterloop is the media partner. waterloop is a nonprofit news outlet exploring solutions for water sustainability.