ALLPE Medio Ambiente Blog : Un pavimento que se ilumina por la noche (sin consumir energía) | prevencion |

The British company Pro-Teq has created a new type of paving that glow in the dark.
It can be applied to any surface, holds up well outside, it is non-slip, waterproof and able to provide soft lighting after dark.  The material absorbs the energy of the sunlight during the day and released as light overnight. 

Via Juan Wood, SustainOurEarth