Welcome dear Bird!! 

If this planet cannot support human life any longer, the the "soul" or spirit  will choose a parallel earth planet.  We aren't the only intelligence in this universe, nor are we the only inhabitable planet.  So, you would be shown   what other choices you have to incarnate to. 

I hope this helps to answer you question. 

I wrote a thread that described our over selves thusly:  There is one Puppet master and on his/her 10 fingers has 10 other puppets. They also have 10 more puppets, etc. We have many choices, yet we are one.
I remember a priest once explained the trinity this way: there are three separate persons in one God: The father, son and spirit. Liken it to three candles; light each candle and you have three flames, but hold them together in one hand and you still have three candles, but only one flame.

Does this help you?   Carol Ann

You see George, now your blog is 4 pages long!  You really started a good thread.  Love and Light to you, Carol Ann

Alysia, glad to be of service!! Love to you, also.