Amongst scientists, James Hansen has long been one of the clearest voices for strong action against climate change. Yet now he advocates replacing coal with wood from vast tree plantations, burning the wood and capturing and sequestering the carbon dioxide. He also supports the idea that we should burn vast amounts of biomass in order to gain energy as well as charcoal in the hope that digging the charcoal into the soil will permanently sequester the carbon and make the soil more fertile, a concept known as 'biochar'. [continue]
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