To contain the temperature rise and avoid the worst effects of climate change, it is essential to drastically reduce emissions of carbon dioxide and other climate-related gases (https://www.ipcc.ch/report/ar6/wg3/downloads/outreach/IPCC_AR6_WGIII_Factsheet_CDR.pdf).
However, the scientific community has now agreed that emissions reduction alone is not sufficient to meet climate targets.
Technologies should be developed to actively remove carbon dioxide from the atmosphere and store it permanently. These solutions will be key to complement other mitigation solutions in the short term. In the long run, however, they will allow the removal of carbon dioxide emitted in past years to restore the concentration of this greenhouse gas to pre-industrial levels.
According to the Intergovernmental Panel on Climate Change (IPCC), the rapid change in the acidity of the sea since the beginning of the industrial revolution is not comparable with that of the previous 65 million years.
Acidification of the seas affects a number of chemical-biological processes, negatively impacting the health of organisms at the base of the marine ecosystem and, by compromising the work of major bio-builders of habitats such as tropical reefs or temperate coral reefs also threaten the huge biodiversity that depends on them.
Rapid and significant changes in chemistry of the oceans directly or indirectly affect other marine species, which are unable to adapt quickly to new levels of sea acidity as they have evolved into an environment with an acidity level stable for millions of years.