Bruce (University of Georgia, Athens, USA) Ferguson 
Porous Pavements [PDF ebook] 

Pavements are the most ubiquitous of all man-made structures, and they have an enormous impact on environmental quality. They are responsible for hydrocarbon pollutants, excess runoff, groundwater decline and the resulting local water shortages, temperature increases in the urban ‘heat island, ‘ and for the ability of trees to extend their roots in