Not to be confused with...
... 'news report' or 'opinion column' or 'blog' ... a 'news report' is also intended to inform in a clear and objective way, but it has to be focused on a specific event, or set of events - it is not concerned with the overall picture, or the broader context or background, as a good article will be. An 'opinion column' will usually be focused on one particular issue, which should be explained convincingly (although there is no 'duty to inform'), and your final opinion argued reasonably - although your opinion doesn't always have to be fair or objective! A 'blog' is intended to present a set of your personal ideas in a lively entertaining way to a general, undefined audience - who you want to hook by your interesting, even provocative, opinions and experiences, so again, you don't have to be fair and objective