📦 A box is a simple, enclosed container typically made from materials like cardboard, wood, plastic, or metal. Its primary purpose is to hold, protect, or transport objects, making it one of the most versatile and widely used items in everyday life. Boxes come in countless shapes and sizes, from tiny jewelry boxes to massive shipping crates, each designed to keep its contents organized and safe. Beyond their practical function, boxes also play a role in how we categorize and understand the worl

How exactly does our voice box work, and what causes changes in our speech? | TED-Ed