“We will either go extinct or come home to reality. Anything that is unsustainable will at some point not be sustained, it’s self terminating”
Are humans a self terminating species? Check out Rev. Michael Dowd’s presentation “Ecology Is the New Theology“. He talks about Grace Limits among other things https://youtu.be/6APJ8dUrGsg
For the future of humans the most important ecological concept is Carrying Capacity or Grace Limits in spiritual language. We cannot squander the gifts we have inherited.