Can this ‘burnt toast’-like substance be a key tool in the fight against climate change?

Can this ‘burnt toast’-like substance be a key tool in the fight against climate change?

What On Earth28:12This one weird climate fix is like ‘burnt toast’It might be considered an odd retirement hobby, but Greg Porteous spends his spare time making biochar. Biochar is a black, charcoal-like substance created by applying high heat to organic materials

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