Crops don't generally thrive in desert-like ground, but 1000 years ago farmers in Israel utilised refuse such as ash and ...

The first, is that the water can be allowed to exfiltrate out of the sand filter into the surrounding soil instead of using an underdrain. The result of this change in design is that the surface water ...

Fluorescent-colored sand sprinkled on San Diego County beaches ... “It is already on the ground, running,” Silverstein said. “It does make sense for that to be the pilot.” ...