There are a lot of claims going on with this product, which for me has resulted in information overload and that sounds too good to be true. So, I'll start by breaking it all down. Firstly, pyrolysis is the subjugation of organic compounds to very high temperatures [thank you dictionary.com]. How Biochar amend soil nutrition, is not fully explained on the website. From my best understanding, it is stable in the soil, lasting for hundreds of years [sounds kind of like plastic]. I'm still out on a decision, though since I found out about it through Treehugger, I'm leaning towards Biochar being a good thing. Still have research more at Biochar Fund and Beyond Zero Emissions Podcast.
Found via Treehugger