Tag Archives: CaCO3

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?

Arctic ocean acidification faster than predictions

Cold water absorbs more CO2, so it is around the Poles that the consequences of ocean acidification are first felt. Pteropods – tiny swimming Arctic sea snails – have difficulty building their shells at CO2 levels very close to the … Continue reading →

Shellfish malformed by ocean acidification

A publication in next week’s edition of PNAS magazine elaborates on the effects of continued acidification of ocean waters on shellfish. Larvae of two species of shellfish commonly found along the American East Coast (Northern quahog and Atlantic bay scallop) … Continue reading →