Any Answers !!!!

1.If all the nations in the world are in debt(am not joking. even US has got debts), where did all the money go? (weird)2.When dog food is new and improved tasting, who tests it? (to be given a thought)3.What is the speed of darkness? (absurd)4.If the "black box" flight recorder is never damaged during a plane crash, why isn't the whole airplane made out of that stuff? (very good thinking)5.Who