I have keys that open no locks, I have space, but you cannot fill it, You can enter, but you cannot leave. What am I?

To mankind I am well known, Throughout the world I have shown, My destructive power when I act, Where ever I go I leave only black, I give man life…

How can you clasp someone’s hands together in such a manner that they cannot leave the room without unclasping them?

Two fathers and two sons just closed a great deal and to celebrate, they go to the cigare store to buy some fine cuban cigars. However the store only has…

An old man wanted to leave all of his money to one of his three sons, but he didn’t know which one he should give it to. He gave each…