Answer:
As light as a feather, but you canβt hold it for ten minutes.
Iron roof, glass walls, burns and burns and never falls.
I always follow my brother but you cannot see me, only him. You cannot hear him but you can hear me. What are we?
I build up castles. I tear down mountains. I make some men blind. I help others to see.
Hold the tail, while I fish for you.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?