Translation and Use of поскольку

Did you know that, apart from потому что (because) and так как (since), we have another important  conjuntion that expresses reason. It is поскольку (since, as long as). It is often used in the beginning of a sentence and is quite formal. Please, don’t mix it up with насколько (as far as)

For example,

Поскольку все уже пришли, мы начинаем заседание. Since everyone is here, we are starting the session.