Answer:
Two year-old children who throw tantrums get this nickname. So did the tsar "Ivan."
What sevenletter word becomes longer when the third letter is removed?
What can you hold in your left hand but can never hold in your right hand?
Humans have two that shrink in the light and expand in the dark
I can be as thin as a picture frame but my insides have many things you can see.
Before Google, we actually had to physically look things up in this building full of knowledge.