A hoax 'alien invasion' alert in Brazil caused panic and amusement, revealing vulnerabilities in emergency systems. Authorities are investigating the breach.

Brazilians woke up today to a strange alert sent to their phones, the emergency alert was purported to be sent from aliens, warning them that ...

Now you can look at the photos and videos and judge for yourself. Whether you call them UFOs or UAPs — unidentified anomalous phenomena — there's no doubt plenty of people are curious about what else ...

Vó Bahiana, a self-proclaimed Brazilian psychic, said chaos will descend during a 24 June World Cup match ...

Astrophysicist Neil deGrasse Tyson speaks with CNN’s Dana Bash about "never-before-seen files" on UFOs released by the FBI and the Pentagon last week. "Given the testimonies we have heard delivered in ...