Today’s paradox: global warming may offset Criegee cooling

And that’s not quite the same as having things the other way around. If you see Criegee biradicals as silver bullet, remember they are already constantly being fired up…

CDR geoengineering challenge: low-carbon cement, high-carbon concrete

Current practice is to grind and burn enormous amounts of limestone, releasing equally enormous amounts of CO2 to the atmosphere. But isn’t there some way to reverse the chemical process and still end up with building material?

Biosphere’s influence on cloud formation larger than previously thought

Clouds can have a large impact on global climate. Depending on conditions they can either trap or reflect the sun’s heat. Scientists at CERN have now determined that organic vapours released by Earth’s organisms play a far more significant role … Continue reading

NASA climate model study: Arctic melting linear with temperature

Here’s another climate model study that challenges the Arctic tipping point idea. Arctic melting is still sensitive to temperature rise though and any further increase in atmospheric CO2 will keep translating to further ice loss. According to the new NASA … Continue reading

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.