BP has proposed capturing carbon dioxide underground. A start-up in Texas called Skyonic says it can capture the gas and turn it into baking soda.
And now Carbon Sciences says it will turn carbon dioxide emissions from power plants and factories into calcium carbonate, otherwise known as limestone or chalk. The company combines the gas with fine calcium powders in a way that doesn't require a lot of heat and pressure, or that much calcium for that matter. For every ton of carbon dioxide, you only need three tons of raw materials, says CEO Derek McLeish.
The good news … Read more