Cement from CO2: A Concrete Cure for Global Warming

Cement from CO2: A Concrete Cure for Global Warming?
The turbines at Moss Landing power plant on the California coast burn through natural gas to pump out more than 1,000 megawatts of electric power. The 700-degree Fahrenheit (370-degree Celsius) fumes left over contain at least 30,000 parts per million of carbon dioxide (CO2)—the primary greenhouse gas responsible for global warming—along with other pollutants.

Today, this flue gas wafts up and out of the power plant's enormous smokestacks, but by simply bubbling it through the nearby seawater, a new California-based company called Calera says it can use more than 90 percent of that CO2 to make something useful - Yes but ...
Ocean Acidification
Atmospheric carbon dioxide (CO2) and methane concentrations are now higher than they have been for more than 400,000 years, primarily as a result of human use of fossil fuels and land clearing. The global oceans are the largest natural reservoir for this excess carbon dioxide, absorbing approximately onethird of the carbon dioxide added to the atmosphere by human activities each year. The uptake of CO2 increases ocean acidification, which threatens marine organisms, including corals that support oceanic biodiversity. Over the next millennium, the global oceans are expected to absorb approximately 90 percent of the CO2 emitted to the atmosphere. NOAA’s preeminent researchers are rapidly improving our understanding of the carbon cycle thanks to aggressive research in this field.