Advanced Armor Combat Technology [Military Documentary] HD

Armour (spelled armor in the United States of America) is a protective covering that is used to prevent damage from being inflicted to an object, individual, or vehicle by direct contact weapons or projectiles, usually during combat, or from damage caused by a potentially dangerous environment or action (e.g., cycling, construction sites, etc.). Personal armour is used to protect soldiers and war animals. Vehicle armour is used on warships and armoured fighting vehicles.

Evolution of Size HD

How do we measure up? U understand the amazing processes that gave us vertebrates smaller than a thumbnail and longer than a diesel locomotive. But what are the mechanisms of these adaptations, the evolutionary pressures that affect size, and the physical limits life can attain.

Evolution of Flight

How did the very first vertebrate flyer the, the pterosaur, escape it’s earthly bounds 220 million years ago. This creature eventually evolved into flying goliath the size of small planes.