News presents current events that have happened or are happening, to an audience in a fast, accurate and objective manner. It is an integral part of democracy, because it allows a free citizenry to maintain a check on their government or other powerful group by providing them with information which can be used to make informed decisions.
All societies are interested in a variety of things, and newsworthiness depends upon how important those things are to that society. So while it may be newsworthy in one country that a man woke up, ate breakfast and caught the bus to work, in another that same event is of little interest.
For example, people in some societies are very interested in the weather. They want to know if there will be rain or snow, whether the temperature is going up or down and how this might affect crops, animals and livestock. Food and drink is also of great concern to most people, so stories about shortages, gluts and new products are often newsworthy. Many people are also fascinated by famous people; they want to know what they do, how they look and if they fall out of favour or are involved in scandal.
Other things which are newsworthy include art, i.e. a famous painting is found to be a forgery, or sport (although the latter can have its downsides). All societies are also interested in sex news, but this is usually reported in a way which does not go beyond what is socially acceptable.