Answer:
What is that which, though black itself, enlightens the world without burning?
Walk on the living, they don’t even mumble. Walk on the dead, they mutter and grumble
a young man was 45 age in 1995 and 40 in 2000 how is it possible
Turn us on our backs and open up our stomachs you will be the wisest of men though at start a lummox.
Until I am measured I am not known, Yet how you miss me when I have flown.
Brings the sky a lot closer.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?