I've been watching movies and TV shows in English for some time. And recently I started listening to BBC, Fox News, NPR, ABC, etc.

I am okay with the intonation in spoken English in those movies, TV shows and news talks. I am curious about hte intonation in news reading. One question: would 2 news readers READ a sentence in a news report using the same intonation? If not, what causes the difference?

Thanks.