If Aliens Landed on Earth Tomorrow, What Would They Eat?

If aliens landed on Earth tomorrow, what would they eat?

With the release of "Disclosure Day," Steven Spielberg's new film about aliens, a question as old as science fiction itself resurfaces: If aliens were to arrive on Earth, would they come to conquer us, to study us ... or perhaps to eat?

If aliens had to survive on Earth, what exactly would they eat ?

Science-fiction has long explored the idea of aliens walking among us, but how would these entities sustain themselves ? In Steven Spielberg's iconic ...