Investigative journalism traces its origins to the 1690s but experienced a resurgence in the early 1900s with the emergence of "muckraking" journalism seeking to expose corruption. While similar to tabloids in focusing on victimization and irony, investigative journalism aims to be earnest and in-depth. However, media consolidation and advertiser influence now limit investigative reporting due to its expense. New technologies and nonprofit collaborations may help sustain investigative journalism in monitoring society and informing the public, though semi-investigative tactics focusing on appearances over substance also pose a challenge to the field.