riddle?

I’m as light as a feather, yet I can destroy everything.
I am as clear as the sky, yet no one can see me.
And existing, to you, is a matter breathing.
I was here much longer than you, I decree.
Strangely, when I am present things are on the ground,
But when I am not, things float around and around
There is none far far away
But this place, everywhere, I am here to stay.
As complex as this riddle may seem
It is a common thing you do know
And a clue, ask yourself where is steam.
And that, my good friends, is the end of the show.

^^|

courtesy to study camp