My spam box has been filled lately with subject lines like breaking news from CNN or MSNBC.
My filters all alert me that these are not from who they say...they are part of a vicious program to trick you into opening and/or downloading programs that will take over your computer.
You can tell who email is from by clicking on the tab [for your particular email program] that says something like more information - when the mail is spam - the return address is usually very odd as it is most always not a US configuration.
But if you are not sure - be safe and just delete any email that is a news alert. You can read news alerts by going directly to the CNN or MSNBC sites...