Thank you for responding to at least part of the subject.
Will it be science which solves the problem?
Ask yourself does government control science or science control government?
Evolution of fertility rates means this... evolution defined as..."the gradual development of something, especially from a simple to a more complex form."
Fertility rate is defined as..."The number of children who would be born per woman (or per 1,000 women) if she/they were to pass through the childbearing years bearing children according to a current schedule of age-specific fertility rates."
So evolution of fertility rates basically means the gradual development of the number of children born per woman. Its not meaningless. Actually its very important because governments use this data in its decisions.
Some believe the declining trend in the "evolution of fertility rate" to the current 2.5 per woman slows but doesn't stop the upward trend in population growth.
In the USA for example the fertility rate has evolved to 1.76 which is below the replacement rate of 2.1.
Now this raises a lot of problems and questions.
For example if this decline continues should the U.S. government reduce abortions to increase a declining fertility rate?
Which raises the question can the U.S. government take this action without one or both parties suffering defeats in elections if they support this action?
I think we both know the answer to this question.
Which circles around to the question is our present forms of government or ideas of governing adequate to meet possible or probable futures?