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Posted Mon Jun 7 2010: from TreeHugger:
Reforestation & Biochar: Two Geoengineering Methods That Won't Cause More Harm Than Good
Geoengineering has been a slow burning controversy for some time now, with some truly wacky ideas proposed, as well as some which take a more sober look at the prospect of intentionally tinkering with the climate to stop the effects of human activity disturbing it in the first place. Let's look at a couple of those geoengineering methods which won't cause more harm than good: Biochar and Reforestation/Afforestation.... Biochar is essential using charcoal made through pyrolysis of biomass and then burying it mixed in with the soil. It has a long history of use in Amazonia, where it's known as terra preta, for its benefits in making soil more fertile. In regards to long-term carbon storage potential, biochar can work on a millennial scale with, in most cases, no negative soil side effects. Some estimates show biochar having the potential to sequester one billion tons of CO2 each year.
[Read more stories about: bioremediation, forests, topsoil depletion, geoengineering]

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