The team used radiocarbon analysis to figure out what parts of the soot come from biomass and what comes from fossil fuels. 科学家利用碳的放射性同位素分析炭黑中哪些来自生物燃料，又有哪些来自矿物燃料。
The UK government's renewable fuels advisors recommended slowing down the adoption of biofuels until better controls were in place to prevent inadvertent climate impacts. 英国政府的可再生能源顾问则建议，在预防不良气候影响的控制工作未到位前，暂缓推广生物燃料。
