They took something called rice husk ash: the leftover husks from processing rice is burned for energy, and the ash remains. It's high in silica and carbon.
Increasing access to energy and other services using high-carbon technologies will produce more greenhouse gases, hence more climate change.
采用高碳技术增加能源和其它服务将会产生更多的温室气体，进而导致气候变化加剧。
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With people actually talking about long-range energy planning for the first time in decades, the high-tech carbon-negative nuclear option has a high profile at the moment.