Answer:
Before Google, we actually had to physically look things up in this building full of knowledge.
It is a form of plastic money.
What is born on the ground but floats to the sky, to be returned back again from the clouds up high?
What can go up but never come down?
Both guys and women enhance their visual organs with this item.
If I say "everything I tell you is a lie", am I telling you the truth or a lie?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?