WarnMe: Two German high school students innovate in flood warning and win the Stockholm Junior Water Prize 2025

At just 17 years old, Niklas Ruf and Jana Spiller have designed an early flood warning system for small rivers, filling a critical technological gap. Their innovation, awarded in Stockholm, combines low-cost sensors and a mobile app to save lives in the face of flooding exacerbated by climate change. A scalable solution, born from a tragedy…