End of the earth as we know it?

High clouds scudding away from the warm suns rising....
Leaves rustle,
branches stagger and sway,
 as a breeze as swift as a swallow swooping in on its prey,
Coming from the east,
The suns robust and radiant rays.....
Funny to think that the thing we look up too,
 to give us a tan or a smile on your face just knowing its there,
Is the one thing that could end all humanity, 
Every single race as it gets ever closer to this place.
What will happen to this beautiful planet when the time does come,
Burnt to ashes,
Will new life form again? Hopefully before that happens,
Well find a salvatition, out there,
Who knows,
Could be far or could be near,
But I'm being silly for that to fear,
As it won't be happening for many a year.....
So now the high clouds come skudding back as the sun sets in the West and the starry night time is outlined in  black....
Why I think of these thoughts I don't really know, as it won't happen for years, 
I want to see my children grow and blossom and their future to be bright,
Come on world,
Let's put up a fight