What is investigative journalism?

[Silent Snob]

What is investigative journalism?

What function has investigative journalism?

What is investigative journalism? And what isn't?

Are there examples of who/what is an investigative journalist and who/what isn't?

What would be the opposite of investigative journalism? And how can it be known as such?

Could there be something like "fake" investigative journalism? What if so, who/what would that be and how can it be necognized as such?

..............

Thank you in advance for answering the questions.