Stop the Smoke - Reduce Global Warming

Michael, Aom, and I just spent three days as trainers at the ECHO Asia Agriculture and Community Development Conference in Chiang Mai, sharing how to make biochar and connecting with development workers from across Asia, one from as far as Cameroon.

Biochar is now being made and used in dozens of countries. It was a key topic at this biennial gathering, hosted by ECHO, a global organization with a strong presence in Asia.

Their model farm in Chiang Mai regularly hosts Warm Heart training sessions, and we continue to partner on community projects to spread biochar knowledge and practical skills.

Over thirty languages were represented at the conference, and every participant left ready to return home and teach smallholder farmers how to make and use biochar.

In Thailand, momentum continues to build in both the private and academic sectors. Joint projects are testing biochar in asphalt, erosion prevention, and water filtration.

Grab, the delivery service operating in Thailand and seven other Asian countries, is buying biochar carbon credits to offset its emissions—each credit representing field or mill waste that wasn’t burned.

The National Metal and Materials Technology Center (MTEC) is preparing to earn accreditation for biochar content and emissions testing later this year. This will help producers verify and certify their biochar, improving market access and quality assurance.

At Warm Heart, Aom is continuing to test a range of feedstocks to match the right kiln types. As inquiries come in from around the country, we’re sharing practical advice to help communities produce biochar safely and effectively—turning waste into value, and avoiding smoke.

With your support, biochar adoption continues to spread. There’s more work ahead, but we’re grateful to celebrate these steady steps forward with you.

Thank you!
Dana, Evelind, Michael, and the Biochar Team

The rainy season started early this year, ending the smoke from crop and forest fires until the weather gets drier.  Here are some updates on our Stop the Smoke efforts here in Northern Thailand.

While commissioning the Wastex biochar equipment has taken longer than hoped, we’re making steady strides toward full operation. We’ve had significant interest in the technology. Representatives from the Provincial Local Development Department visited to observe the process and learn how this model might be applied in other smoke-prone areas. In addition, the National Metal and Materials Technology Center (MTEC) came to test emissions from the Wastex unit, contributing data to the national Thailand Biochar Consortium research project.

The Consortium itself held a major brainstorming workshop on May 26. Participants included representatives from FAO, university researchers, and biochar producers across Thailand. Warm Heart’s Aom presented our multi-country work with smallholders, highlighting practical, low-cost methods for making biochar and integrating it into daily farming.

On May 9, we were invited to join a roundtable hosted by the German-Thai Agricultural Cooperation Project (GETHAC) at Chiang Mai University’s Faculty of Agriculture. It was inspiring to see so many organizations tackling crop residue burning. From government programs to grassroots efforts, biochar is gaining traction as a scalable solution, including within the Royal Project Foundation’s large agricultural development programs.

Training also continued with Michael and Prachan Jakeo (“PJ”) joining a World Wildlife Fund program to train farmers in Tak province.  They face the many challenges of steep terrain and worsening soil degradation. Teaching smallholders how to convert waste into biochar is not just about smoke reduction—it’s about restoring soil, increasing yields, and protecting livelihoods.

In our field testing, Aom has been expanding our biochar feedstock trials. We’ve added small branches with leaves, coffee husks, durian shells, macadamia shells, teak leaves, and cassava rhizomes to our experiments. Understanding how each feedstock performs is critical for determining the best pyrolysis kiln and expanding the adoption of biochar.

As always, thank you for supporting this work. Your partnership allows us to keep innovating, sharing what we learn, and equipping farmers with tools for resilience and environmental restoration. Together, we are making visible progress—one farmer, one field, and one fire-free harvest at a time.

Best wishes for the summer months!

Dana, Michael, Evelind and the Warm Heart Biochar Team