Around 3 billion people cook and heat their homes using open fires and leaky stoves burning biomass (wood, animal dung and crop waste) and coal.

约有30亿人通过使用燃烧生物质(木柴、动物粪便、作物废弃物)和煤炭的明火以及开放式炉灶进行烹调和取暖。

youdao

Open Ethan fire hole observation, coal layer surface in a furnace, appear local fire blaze, burning through phenomenon.

开启探火孔观察，炉内料层表面一片火光，出现局部冒火，烧穿现象。

youdao

Almost half of people in the world cook their food and heat their homes by burning coal and biomass in open fires or basic stoves.

FORBES: How A Market-Based Approach Can Solve A Humanitarian Problem In Darfur