Open fires, burning wood to ash, produce an unhealthy amount of indoor air pollution that causes over 4 million deaths each year. Stoke, located in Kenya, is a stove that converts wood into charcoal, which can become biochar. Among a myriad of other uses, biochar mixed with compost significantly increases crop yields and garden productivity. The crops grow better, families are healthier, and due to the local businesses building the stoves, the economy grows as well. These stoves save trees by burning ⅓ of the wood that a normal fire uses. This is in addition to several tonnes of C02 that each stove can prevent from being emitted to the atmosphere.