Have you ever wondered what secrets lie beneath the surface of the earth? In a remote village in China, a group of farmers stumbled upon a stunning discovery that has baffled archaeologists and historians for decades. The Longyou Caves are a complex of 24...
The US Army has a big problem: its training ammunition is polluting the environment. Every year, the Army uses hundreds of thousands of rounds of bullets for training purposes, ranging from low velocity grenades to tank rounds. These bullets are made of metal and...