Donald Trump’s pledge to release official files relating to UFOs has intrigued conspiracy theorists who suspect the US government has hidden evidence of alien activity on Earth.

Explore America's fascination with aliens and UFOs, revealing political implications, historical encounters, and ongoing debates about extraterrestrial life.

Be it sci-fi, immigration or even artificial intelligence, the concept of "aliens" mirrors how we define fear, fascination and the "others" among us.What springs to mind at the mention of "alien"?

Add Yahoo as a preferred source to see more of our stories on Google. Earth vs. the Flying Saucers Question time: What do you do when aliens peacefully show up on Earth, seemingly ready to negotiate a ...