An era is a commonly used word for long period of time. When used in science, for example geology, eras denote clearly defined periods of time of arbitrary but well defined length, such as for example the Mesozoic Era from 252 Ma–66 Ma, delimited by a start event and an end event. When used in social history, eras may for example denote a period of some monarch's reign. In colloquial language, eras denote longer spans of time, before and after which the practices or fashions change to a significant degree. When era is extended to a calendar system, it is known as a calendar era. In Sanskrit or Indian culture eras are known as Yugas.

In chronology, an era is the highest level for the organization of the measurement of time. A calendar era indicates a span of many years which are numbered beginning at a specific reference date (epoch), which often marks the origin of a political state or cosmology, dynasty, ruler, the birth of a leader, or another significant historical or mythological event; it is generally called after its focus accordingly as in Victorian era.

News is the communication of selected information on current events which is presented by print, broadcast, Internet, or word of mouth to a third-party or mass audience.

One theory claims that the English word "news" developed in the 14th century as a special use of the plural form of "new". In Middle English, the equivalent word was newes, like the French nouvelles and the German neues. Similar developments are found in the Slavic languages – the Czech and Slovak noviny (from nový, "new"), the cognate Polish nowiny and Russian novosti – and in the Celtic languages: the Welsh newyddion (from newydd) and the Cornish nowodhow (from nowydh).

Before the invention of newspapers in the early 17th century, official government bulletins and edicts were circulated at times in some centralized empires.

The first documented use of an organized courier service for the diffusion of written documents is in Egypt, where Pharaohs used couriers for the diffusion of their decrees in the territory of the State (2400 BC). This practice almost certainly has roots in the much older practice of oral messaging and may have been built on a pre-existing infrastructure.