DODOMA, Aug. 11 -- IMAGINE: There is a new superhero in the Tanzanian cooking world—not solar panels or wind turbines (excellent, but frankly boring).

Meet Rafiki Briquettes, charcoals smarter, greener cousin—charcoal who went to university, got an eco-degree and now spends weekends fighting climate change with class.

At the Nane Nane Agricultural Exhibition in Dodoma, Tanzanias biggest agri tech fair, held annually around August 8th or fondly called a Farmers Day celebration, where STAMICOs pavilion has become the surprise hit.

No dancing mascots or blaring music, just real, clean-energy education that is drawing more crowds than free wifi.

The State Mining Corporation (STAMICO) has taken centre stage not with pickaxes, b...