If you buy CharKilos from Boon Song rather than the Thai NGO Warm Heart then the money will go though Warm Heart to Boon Song. If you buy from Warm Heart the money will go replace the money they spent having biochar buried in Thailand and that new money will be used to pay for more biochar being buried. Unlike all the other un-miners currently on this website Boon Song does not speak English and has no access to his profile. He made the biochar from corn cobs that usually get burnt to ash rather than biochar. If burnt, as done traditionally, there is a huge amount of smoke which traps a lot of heat in the atmosphere and causes a lot of health problems in Chiang Mai Thailand’s second biggest city. There is hardly any smoke when the barrel system you see below is used.

Made biochar with rice husk with help from the NGO Warm Heart Worldwide