Answer:
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
What makes a loud noise when changing its jacket, becomes larger but weighs less?
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
Brown I am and much admired; many horses have I tried; tire a horse and worry a man; tell me this riddle if you can.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?