Organic pollutants such as PFAS, microplastics, pesticides, and antibiotic resistance genes threaten soils, food safety, and farming livelihoods. Large-scale solutions are particularly lacking for PFAS contaminated soils. The PyBi-Contaminants project explores how pyrolysis - the thermal treatment of biomass - can both destroy these pollutants and transform contaminated residues into biochar. This biochar is not only free of contaminants but also serves as a powerful sorbent: it can bind pollutants in soils and water, reduce their uptake by plants and animals, and improve soil fertility. By closing this loop, contaminated biomass becomes a resource instead of a liability. Applications range from safer agricultural soils to cleaner aquaculture systems, while also creating long-lasting biochar-based carbon sinks that support climate goals. PyBi-Contaminants brings together Swiss and international partners to deliver practical, science-based strategies that protect food systems and the environment.