While their experiences do not tell us what an alien would eat, they do show us that leaving Earth changes the way we eat.

If humans ever receive a message from intelligent aliens, the biggest challenge may not be how far away they are, but how to communicate at all. Our nearest star system is more than four light-years ...

And if aliens made of different stuff potentially possess consciousness, then why not minds made of silicon, metal, and ...

This strange sea alien can be as smart as humans ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself? The idea that aliens assisted the ...

Spielberg’s hotly anticipated new movie gives fresh impetus to a dilemma that has long captured the imaginations of filmgoers, scientists and the great director himself ...