How does a pipeline work?

A gas pipeline is a network of tubes that takes gas from a producing region, such as Bolivia, to a consuming region, such as Brazil. The gas is transported through the tubes with the help of the pressure difference: at…

What could you buy with R$100 13 years ago?

In general, much more things than currently. And this is natural: the accumulated inflation since the first ME hit the newsstands is 124.48%, according to the Extended Consumer Price Index (IPCA), measured by the Brazilian Institute of Geography and Statistics…

How to save a drowning person?

The scene calls for quick action: someone struggles in the water and starts screaming for help. If there are no lifeguards around, it may be up to you to attempt rescue. In such a situation, it is not enough just…