Mattias Gustafsson introduces the Stockholm Biochar Project in which high-quality biochar is produced from urban biomass. The speech also gives a look behind the scenes of political decisions at municipal level.
Mattias Gustafsson: Stockholm Biochar Project
![](https://german-biochar.org/wp-content/uploads/Mattias-Gustafsson-Stockholm-Biochar-Project-FVPK.jpg)