Like HowStuffWorks on Facebook!

Stuff They Don't Want You to Know

Crop Circles - CLASSIC

Cereologists don't all agree on how crop circles form, but there are some wild theories out there, including freak weather and UFOs. Also, hoaxers confessed to making hundreds of circles. Tune in to learn more about theories surrounding crop circles.


Most Watched in Conspiracy

Most Watched in Conspiracy
3:57

Stuff They Don't Want You to Know: Is public WiFi dangerous?

Most Watched in Conspiracy
4:24

Stuff They Don't Want You to Know: Zombies: Part 1 - CLASSIC

Most Watched in Conspiracy
5:44

Stuff They Don't Want You to Know: What would happen if the world's debt disappeared?

Most Watched in Conspiracy
6:41

Stuff They Don't Want You to Know: Banks, Cartels and Money Laundering

Most Watched in Conspiracy
4:19

Stuff They Don't Want You to Know: Drones, Part 1: Target Killing | CLASSIC

Most Watched in Conspiracy
4:14

Stuff They Don't Want You to Know: Religion and Crime: The Narco Saints

Most Watched in Conspiracy
5:36

Stuff They Don't Want You to Know: What is the 'Red Market?'

Most Watched in Conspiracy
8:02

Stuff They Don't Want You to Know: 5 Things You Didn't Know About Satan

Most Watched in Conspiracy
3:45

Stuff They Don't Want You to Know: Real-life Super Powers

Most Watched in Conspiracy
2:58

Stuff They Don't Want You To Know: The Mafia: Fact and Fiction

Most Watched in Conspiracy
5:47

Stuff They Don't Want You to Know: 4 Weird Things about the Washington Monument

Most Watched in Conspiracy
4:27

Stuff They Don't Want You to Know: Drones, Part 2: Domestic Use | CLASSIC


Recent Videos in Conspiracy

Recent Videos in Conspiracy
6:41

Stuff They Don't Want You to Know: Banks, Cartels and Money Laundering

Recent Videos in Conspiracy
4:14

Stuff They Don't Want You to Know: Religion and Crime: The Narco Saints

Recent Videos in Conspiracy
5:44

Stuff They Don't Want You to Know: What would happen if the world's debt disappeared?

Recent Videos in Conspiracy
3:57

Stuff They Don't Want You to Know: Is public WiFi dangerous?

Recent Videos in Conspiracy
5:36

Stuff They Don't Want You to Know: What is the 'Red Market?'

Recent Videos in Conspiracy
8:39

Stuff They Don't Want You to Know: 5 Secret Space Programs

Recent Videos in Conspiracy
4:24

Stuff They Don't Want You to Know: Berenstein or Berenstain? The Mandela Effect

Recent Videos in Conspiracy
4:13

Stuff They Don't Want You to Know: Targeted Online Advertising

Recent Videos in Conspiracy
8:17

Stuff They Don't Want You to Know: Chemtrails: Experimenting on the Public

Recent Videos in Conspiracy
5:13

Stuff They Don't Want You to Know: Ghosthunters: The Warrens

Recent Videos in Conspiracy
4:31

Stuff They Don't Want You to Know: Who was the Original Night Stalker?

Recent Videos in Conspiracy
8:20

Stuff They Don't Want You to Know: 5 Things You Should Know About Primary Elections