There Is No Hope for the Current World Civilization

There is a world civilization.  Commerce is globalized as are all facets for production; and cultures influence other cultures everywhere.

The world's aggregate population continues to grow, facilitated by globalization, which includes spreading technologies of public health which decreases mortality and increases health and longevity.

What globalization has not been particularly good at is spreading wealth (or decreasing inequality).  "Wealth" is a stand-in for education, equality among people, and an outlook of stability and security.  Without these things, populations tend to grow -- countries whose populations are stable or are shrinking are those which are relatively "wealthy". 

There is no public policy which has effectively slowed or stopped population growth.

As a society, people will not voluntarily choose to consume less.  Given a free choice and the ability to do so, people will choose to consume more.  Consuming more is what people tend to see as "making their lives better."

The processes of production and consumption produces waste and pollution beyond what can be recycled and reabsorbed.

Waste and pollution is causing climate change -- global heating.

As a response to climate change, people produce more waste and pollution.

A growing population produces more waste and pollution.  Climate change provokes people to produce more waste and pollution.

Societies will not change other than in response to environmental forces beyond their control.

Current industrial technology makes it possible for societies to control the immediate environments so that they do not have to change their behaviors so as to produce less waste and pollution.  This industrial technological adaptation will only cease when it becomes too "expensive" to continue this type of adaptation.

Industrial technological adaptation is localized adaptation; it creates a "comfortable" environment only within confined areas, physically separated, isolated, from the global environment.

But people do not live in truly closed environments.  Any waste and pollution they generate will be expelled into the global environment.

Early in human history, when fewer people were around, the waste and pollution they produced could be absorbed the the global environment. 

But industrial civilization has magnified what each human can produce in waste and pollution by orders of magnitude, and has increased the number of those human beings by orders of magnitude.

The environment that once could absorb the waste and pollution of a few humans, is not being overwhelmed by the waste and pollution of billions of humans.

And humans will not stop producing this waste and pollution because the by-products of this waste and pollution is the source of their well-being.

Because of waste and pollution, the environment will change so that human being will no longer be able to produce enough waste and pollution to to satisfy their life-styles.

Perhaps this changed environment will result in a decrease in the human population to a level where the waste and pollution it produces can be absorbed by the environment -- generally, populations decrease much below this level before rebounding.

Populations decrease either by fewer births or by a lowering of the average lifespan.

Society will change in response, or as a response, to lower fertility or lifespan.  This means that the current world civilization will change, in other words, it will end, as it is based on the current level of fertility and longevity.