HUMAN WORLD

As the first humans spread across the world during prehistoric times, some settled at the margins of deserts, others at the edge of the froz...

Fighters and bombers Aircraft were first used in the First World War to spot enemy artillery positions. Fighter planes were invented soon af...

Siege mentality In medieval times, town and castles were built with heavily fortified stone walls, towers, and walls within walls, to make t...

When was gunpowder invented? Gunpowder is made by mixing saltpetre (potassium nitrate) with sulphur and powdered charcoal. A formula was pub...

Stone Age men hunted with flint axes and club, which they sometimes used for fighting each other, too. The development of metalworking led t...