Tree sap is mostly water with sugars and minerals, and like many liquids, it expands when it freezes. Gradual freezes usually ...

On paper, Iran’s Arash rifle outguns the legendary Barrett M82 — firing explosive 20mm rounds at extreme range. In reality, its awkward design, brutal recoil, and flawed ergonomics turn it into a ...

This weapon is meant to replace a legend that served for decades. The US Army’s Next Generation Squad Weapon introduces new ...