Tag Archives: biochar

Right recipe for CDR geoengineering with biochar: mind the temperature!

Backyard gardeners who make their own charcoal soil additives, or biochar, should take care to heat their charcoal to at least 450 degrees Celsius to ensure that water and nutrients get to their plants, according to a new study by Rice University scientists.

biochar recipe CDR geoengineering

Rice University biogeochemist Caroline Masiello shows improved biochar

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Crop geoengineering #3: doubling root depth would store 230 Gt carbon in agricultural soils – minus 118 ppm CO2

Breeding crops with deeper (and larger) root systems could help to lower atmospheric CO2 levels, while also making the crops better drought-resistant, Douglas Kell, a Professor of Bioanalytical Science at the University of Manchester says.

After Copenhagen: Cancún, Kyoto… or Montreal?

Chlorofluorocarbons are up to 11,000 times as potent as greenhouse gases as CO2. The Montreal Protocol locked away some 4 years of regular CO2 emissions. And if we try really hard – and look for every old fridge on the … Continue reading →

Geoengineering vs ‘extreme geoengineering’

Current proposals for geoengineering, measures to directly influence parts of system Earth, like the global climate system, seem overestimated – with respect to their proclaimed beneficial outcomes. Last month science magazine PNAS published an overview of some of the better … Continue reading →