About: Michael Klare - The Race for What's Left
We ought to make it culturally okay to not have children as a first step. Should you believe the soul exists away from the body, not every soul needs a body, and can stay where it is until we can get another planet up and running to handle the load.
The world has just recently become overcrowded, mostly in the last 60 or 70 years. There are few genuine frontiers left, except offshore as Klare mentions. It appears that humanity is destined to destroy a good portion of the underlying geo-biological foundation for its own existence, including biodiversity, topsoil, suitable climate for agriculture, coastal communities, etc. It is no joke to refer to the age that we're in the 6th great mass extinction, including perhaps our own.