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The ability to control fire dramatically changed the habits of early humans. Using fire as a heat and light source made it possible for people to cook food, increasing the variety and availability of nutrients and reducing disease. Furthermore, in cold weather, the generated heat would enable people to stay warm with the flames also […]

Closed Circuit Television Cameras were developed in 1942 by Walter Bruch in Germany. Their purpose was to observe the early test launches of the V2 rocket, and you must jump forward 20 years to 1962 before they began to be used publicly. Today, you are likely to be captured on CCTV wherever you go, at