Mafia

Joaquin "Jack" Garcia is a retired FBI agent who worked 24 of his 26 years in the bureau undercover. He spent three years infiltrating the Gambino crime family under the alias "Jack Falcone."

Joe Serio, former CIA agent and Russian mafia investigator, rates Russian mob scenes in movies and TV, such as "John Wick," for realism.

Tyrone White was a member of the 65 Menlo Gangster faction of the Crips gang in South Central Los Angeles during the late '80s and '90s, witnessing police brutality and the LA riots. White speaks with Business Insider about the culture of the Crips and the rivalry with the Bloods.

These days, no matter what wild thing you choose to believe, you can find someone who agrees with you. We see it most famously in politics but also quite often in the world of batty conspiracies.

Hate to break it to you, but your truffle oil wasn't made from truffles. Your vanilla extract? Well, that's probably just a lab-made derivative of crude oil. And your shaker of Parmesan cheese? It probably has wood pulp inside.