High in the Frostpeak Mountains, siblings Elun and Toro join celebrated hydrologist Dr. Marek to protect the life-giving Glacier Stream. They brave crevassed ice sheets, install flow meters to measure meltwater, and drill ice cores to unlock ancient climate secrets. Toro gathers caddisfly larvae and diatoms as water-quality detectives, while Elun designs sediment traps and mock wetlands to slow rushing melt. Venturing downstream, they map irrigation channels and teach villagers hands-on monitoring techniques. Their final water stewardship workshop, complete with willow-bank reinforcements and clear, colorful graphs, persuades regional planners to declare the Glacier Stream a protected watershed. An inspiring tale of youthful science and community action.
