Imagine receiving an alert on your phone from a government agency at night, warning you about an alien attack, when you have ...

A hoax 'alien invasion' alert in Brazil caused panic and amusement, revealing vulnerabilities in emergency systems.

UFO investigators are pushing the U.S. government to release files related to the 1996 Varginha UFO incident.

Americans "deserve the truth," a U.S. congressman has told a press conference as part of a wider transparency campaign.