"Startup Lithos Carbon, however, is focusing on the land, and a natural tool: basalt, a black igneous rock that’s common on volcanically active islands like Hawaii and Iceland. Lithos recycles existing basalt dust—a quarrying by-product—and spreads it over crop land. When rainwater mixes with the basalt dust, it triggers a chemical reaction that captures and locks up CO2 as bicarbonate."

"The modules will use carbonate fuel cells to efficiently capture and concentrate carbon dioxide streams. Combustion exhaust from an external source, like a flue stream, will be directed to the fuel cell, which electrochemically reacts fuel and air to produce power, while capturing and concentrating carbon dioxide for utilization or permanent storage. The modular design enables the technology to be deployed at a wide range of locations, operate at high efficiency, and advance business goals at hard-to-decarbonize industrial and commercial applications."

"The MARVEL reactor will be constructed at INL’s Transient Reactor Test Facility. Yasir Arafat, project lead for MARVEL, showed me the site and provided an overview of the project. Arafat explained that microreactors are 'very tiny reactors' compared to today’s more standard gigawatt-scale commercial units. He said they typically produce single-digit megawatt output, although some can run up to 20 MW or more. Arafat noted that microreactors have three key features: they can be built in factories, transported over standard roads, and are self-regulating, that is, they’re automated to operate safely without human interaction."

"Storage is important for renewables as major clean sources of energy generation like solar and wind power are variable, since the sun doesn’t always shine nor the wind always blow. This means, not that renewables are useless (as some right-wing politicians have tried to claim) but that decarbonizing the electricity grid using these alternative (green) sources of power requires innovation in storage tech — which is where Energy Dome is aiming to step in with its CO2 Battery."

"Once Radiant’s designs have been proven out in engineering testing and approved by regulators, the company believes that it has a strong market potential. Today, the diesel generator market for the United States alone is over $5.8 billion, according to analyst IBISWorld. Bernauer believes that his company’s reactors–which only have to be refueled every five years or so–will be attractive to remote communities that are located far from an electric grid and may have an unreliable supply chain to refuel diesel."

"One last thing to point out: If you compare the emissions of the two shoes on a part-by-part basis, the analysis suggests that the emissions for 3D printing are actually 10 percent to 17 percent higher. 'Only when a complete assembly of the shoe is taken into account does the overall carbon efficiency of 3D printing stand out,' according to the analysis."