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

An alien invasion involving advanced artificial intelligence could unleash a global financial meltdown, geopolitical turmoil and rioting on the streets, a leading astrophysicist has warned in a fresh ...

Aliens are real. Or maybe not. The possibility of mystical beings watching over us or even walking among us is not just the ramblings of the fringe and Reddit users, but a key political and societal ...