Biochar: Is the hype justified?

BBC News
By Roger Harrabin Environment analyst, BBC News

Biochar brings benefits to soils, boosting plant growth
Green guru James Lovelock claims that the only hope of mitigating catastrophic climate change is through biochar - biomass "cooked" by pyrolysis.

It produces gas for energy generation, and charcoal - a stable form of carbon.

The charcoal is then buried in the ground, making the process "carbon negative".
Researchers say biochar can also improve farm productivity and cut demand for carbon-intensive fertilisers.

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