Bring up aliens and a lot of people will scoff. But not everyone is laughing. Around the turn of the century, 3.8 million people banded together in a real-time search for aliens -- with screensavers.

A brief remark from former President Barack Obama about aliens being «real» ignited a wave of viral speculation this week, prompting him to quickly clarify what he meant. The comment, made during a podcast appearance,

Did Obama confirm aliens? The truth behind viral claims, Area 51 rumours and what the former US president really meant.

What if we were the aliens? In a great 1991 episode of 'Star Trek: The Next Generation,' the notion of aliens among us was changed.