How did the CIA and the FBI come about?

Let’s start with the CIA, the acronym for Central Intelligence Agency, the main information agency of the US government. She was born to succeed the OSS (acronym for Office of Strategic Services), a spy agency that operated only during World…

How does the subway work?

In general, underground trains are programmed to run automatically. Ideally, computerized equipment and electronic circuits do everything themselves, accelerating and stopping trains, opening and closing doors, controlling the time between trains, and so on. This, of course, in theory, because…

How is ice cream made?

»> 1. In a factory, ingredients are mixed in stainless steel tanks with a capacity of over 3,500 liters. This cream is the basis for the production of all types of ice cream and popsicles. 2. The mixed cream goes…