\nOf the future…<\/p>\n
\n
![\"The](\"\/global_warming\/climate-graphics\/Future-of-Humanity.jpg\")
\n <\/a>
\n<\/figure>\n
About the Song
\n\ud83c\udf0e THE FUTURE OF HUMANITY
\n+4\u00b0C \u2192 +7\u00b0C: From Civilization Crisis to Human Survival Crisis<\/p>\n
What happens to humanity if Earth doesn\u2019t stop at +2\u00b0C or +3\u00b0C\u2014but eventually reaches +4\u00b0C and then +7\u00b0C?<\/p>\n
There is no scientifically established population number for a +7\u00b0C Earth.<\/p>\n
But the physical constraints are becoming increasingly clear.<\/p>\n
At approximately +4\u00b0C, humanity could face a civilization-scale crisis:<\/p>\n
\ud83d\udd25 Extreme heat
\n\ud83d\udca7 Water shortages
\n\ud83c\udf3e Agricultural disruption
\n\ud83c\udfd9\ufe0f Infrastructure failures
\n\ud83c\udf0d Mass migration
\n\u26a1 Energy-system stress<\/p>\n
Over the following centuries, continued warming toward +7\u00b0C could transform the question entirely.<\/p>\n
The issue would no longer be simply:
\nHow do we adapt civilization to a hotter planet?<\/p>\n
It becomes:
\nHow many humans can the planet physically support?<\/p>\n
Technology could keep some people alive through underground facilities, controlled environments, hydroponic agriculture, protective equipment and advanced energy systems.<\/p>\n
But there is an enormous difference between keeping thousands or millions of people alive in artificial environments and maintaining a civilization of 8+ billion people.<\/p>\n
Today\u2019s population depends upon the Earth providing enormous services essentially for free:<\/p>\n
\u2600\ufe0f Solar energy
\n\ud83d\udca7 Rainfall and freshwater
\n\ud83c\udf3e Productive soils
\n\ud83c\udf33 Ecosystems
\n\ud83c\udf2c\ufe0f Breathable air
\n\ud83c\udf0a Functioning oceans
\n\ud83c\udf21\ufe0f Manageable temperatures
\n\ud83c\udf31 Outdoor agricultural space<\/p>\n
At +7\u00b0C, humanity could increasingly have to manufacture artificially what the Earth currently provides naturally.<\/p>\n
And that creates a fundamental problem:<\/p>\n
Energy requires infrastructure.
\nInfrastructure requires materials.
\nMaterials require mining and manufacturing.
\nManufacturing requires energy and water.<\/p>\n
Technology can extend human habitability.<\/p>\n
But technology cannot be assumed to recreate the Earth for eight billion people.<\/p>\n
The path from +4\u00b0C to +7\u00b0C could therefore represent a transition from:<\/p>\n
Fighting to preserve civilization
\nto
\nFighting to preserve humanity itself.<\/p>\n
The Future of Humanity: +4\u00b0-7\u00b0C<\/a><\/strong><\/p>\n