A new form of light-emitting cement promises to provide illumination to commuters on highways and bicycle lanes at night without tapping into external sources of energy.

The light-emitting cement, developed at Mexico’s University of San Nicolas Hidalgo (UMSNH), works in much the same way as other commonplace fluorescent materials – it absorbs solar energy during the day before emitting it at night once the sun has set. Its developers claim the material can produce illumination for as long as 12 hours after…