Last month, the United States dropped a 21,600 pound bomb on a remote area of Afghanistan, attacking a tunnel complex used by Islamic State militants. The Massive Ordnance Air Blast, or MOAB, was also nicknamed the Mother of All Bombs and was the largest and most powerful non-nuclear bomb ever deployed in a combat situation. A month after it was dropped, the US military is now working on the MOAB's successor, and it's likely that it will be at least partially 3D printed. Read more at 3DPrint.com: http://3dprint.com/175248/3d-printed-bombs-moab/