18.9 million tonnes. Burned. Every year.

Every burning season -- January to April -- farmers across Thailand set fire to their crop waste. Rice straw, sugarcane leaves, corn husks. Millions of tonnes, burned in open fields because it is the cheapest and fastest way to clear land before the next planting cycle.

The smoke blankets northern Thailand. PM2.5 reaches 13 to 27 times the World Health Organisation's safe limit. During peak burning months, cities like Chiang Mai experience some of the highest PM2.5 concentrations recorded anywhere.

The Thai government has recognised this crisis. Open burning is prohibited during designated periods, and agencies like the Department of Agricultural Extension actively research alternatives. But the economics have not caught up with the policy.

Most Thai rice farmers carry significant debt. The cost of mechanically collecting crop residue -- baling, transport, storage -- is money most farmers do not have. The post-harvest window before the next growing cycle is tight. Fire is free and fast.

This is not a problem of awareness. Farmers know burning is harmful. It is a problem of economics -- and the gap between policy ambition and practical alternatives on the ground.

That is the story Bhumi exists to tell.

Crop burning in Southeast Asia affects public health, soil fertility, and climate. It happens every year, on a predictable schedule. Thai researchers, government agencies, and universities have studied it extensively. But the English-language coverage is almost entirely seasonal -- a few headlines when the smoke gets bad, then silence until next year.

The Thai-language research is substantial -- government reports, academic papers, and NGO publications that document the problem in detail. This data rarely reaches an international audience. It is not assembled or accessible in one place.

That is what Bhumi does. We collect, verify, and publish the evidence -- on crop burning, on the sustainability claims brands make, and on the packaging alternatives the industry promotes. Every source named. Every number checked.

Most publications launch with a position and then find evidence to support it. We are doing it the other way around.

Everything on this site is independently sourced, fully cited research. We publish what the evidence tells us, not what a narrative requires.

Everything we publish is free. Every correction is public. We are building an evidence base, not an audience funnel.

If the sustainability industry ran on evidence instead of claims, publications like this would not need to exist. Until then, we will keep publishing.