The Scalability of Biochar
A popular idea at the moment to address climate change is biochar – essentially taking organic materials, charring them, and burying them in the soil…Now, the biofuel story has given me a bit of a horror of ideas that sound cool to environmentalists, are fine on a small scale, but are a disaster when scaled up by industrial society. So I wanted to do a few quick back-of-the-envelope calculations of the limits of this approach.


