Amonette, J.

Very large quantities of carbon dioxide (CO2) will need to be removed from the atmosphere over the course of the next century or two to stabilize Earth’s climate at a safe temperature. A handful of C-drawdown approaches are available to perform this task, three of which involve soils: increasing stocks of soil organic matter (SOM), […]

Agricultural use of biochar is generally considered a sustainable and climate-friendly way to increase farm productivity. These benefits, however, depend on how biochar is produced. I have performed some preliminary calculations for a range of biochar production technologies using published data for methane emission and biochar carbon efficiency that suggest that most biochar production approaches […]