> So how much carbon does biochar release? What is the climate impact of it? Biochar is carbon negative, it sequesters carbon. Approximately ~ tree falls down

> So how much carbon does biochar release? What is the climate impact of it? Biochar is carbon negative, it sequesters carbon. Approximately ~ tree falls down, rots and it all gets turned back to methane -> CO2. Instead you pyrolysis (burn in low oxygen) the tree, I use the cone dug in ground method. This releases part of the CO2 and also stores a lot of the carbon, as you partly can see when they study 10,000 year old campfires. Then in theory you save on fertilizer and water as it averages it out and microbes process it better, which also reduces CO2. It also lowers compaction which makes for better plant root systems. Our local government sewerage (which we are not on) gets turned to biochar and put in fields. Biochar is a culture, it's beginnings are from the Amazon Dark Earth, I'm more into the science. People always have to talk about peeing on their biochar, sigh.... and they send their biochar off to be tested on how many football fields surface area per cubic inch ie one gram of biochar can have over 12,00 square feet of surface area. I'm not so sure on this, I think it's over maximization. Testing in the garden is good though, so I shouldn't complain.