The insurgents now are often using — and even the malicious — are using home - made explosive [s], which the military
calls UBE for Unidentified Bulk Explosive, because basically they can get a lot of bang literally for the buck; that they can create enormous explosions.
The
UBE works by using a wastewater treatment process
called forward osmosis to filter out contaminants from urine and shower wastewater, leaving clean water and urea separately.