Researchers are investigating a car fuel comprised of a liquid that is converted to hydrogen by a solid catalyst. The used liquid is then emptied from the tank and charged with hydrogen, after which it can be used again in a circular system that is free from greenhouse gas emissions.
Researchers test treating recycled concrete with CO2 to accelerate natural carbonation, finding increased strength and CO2 absorption. Life cycle analyses estimate 9-13% less net emissions by using carbonated recycled material in concrete production.
