Explainers

Concrete is among the world’s most consumed materials—second only to water. It also produces large amounts of heat-trapping greenhouse gases.

Energy storage is technology that holds energy at one time so it can be used at another time. Cheap and abundant energy storage is a key challenge for a low-carbon energy system.

Hydrogen is the most abundant chemical substance in the universe. It can be used as a fuel that does not produce greenhouse gases when burned.