Carbon Engineering and Climeworks featured in an article in Nature

It has long been regarded as one of the more blue-skies solutions to climate change. Now two companies have vastly increased their capability to suck carbon dioxide from the air. One, based in Canada, plans to convert captured CO2 into diesel to fuel buses; the other, in Switzerland, will sell it on to a firm that uses CO2 to boost crop growth in greenhouses.

http://www.nature.com/news/commercial-boost-for-firms-that-suck-carbon-from-air-1.18551