We often see rushing graphics during the starting sequence which connotes urgency, which shows how quick they want to inform us of new information
Most things are usually transparent which connotes unchanged and untampered news so we trust what they say
We usually see the world from space which connotes that they have worldwide coverage and can let us know what happening anywhere
There's usually a landmark in it so that we know that they can tell us the news from anywhere
There's always clocks in the starting sequence and this connotes the urgency in how quick we need to know whats happened
We often see satellites or technology to show us they are using everything they can.
They use fast paced beat driven music which involves brass music to connote urgency.
They often use male voice overs to connotes authority because because more of the older generation listen and watch the news they prefer a mans voice as in today's sexist world a man is considered wiser than women
They often use metallic blues or strong reds connotes that its like the office of world to make sure everyone knows what id going on and are informed
Presenters need to seem to have no opinion so that the neutrality and importance work they only have a limited range of faces they must have a received pronunciation so that they are speaking standard English accent they use direct address so they look straight at the camera and it seems as if they are talking directly to us and the the presenters are always sitting don before it starts to have a punctual and formal feel.