There is a close relationship between climate change and the ages of humanity.
Various traditions break human history into four ages, with climate change evident causing each age to end. Hesiod living in circa 750 BCE in Greece lists five ages, Ovid a Roman in the closing decades from 43 BCE listed four ages.
Hesiod describes a utopia akin to the Australian Aborigine version of the Dreamtime, he calls the Golden Age. It describes a time when humanity was carefree in an age of plenty, nomadic hunter-gatherers when the earth swarmed with herds of animals that the hunters obtained all they needed from. The Golden Age was ended by the Younger Dryas, a sudden big freeze that hit inside ten years, lasting 70 years, which coincided with the extinction of scores of animal and plant species, including those that had been around in North America for millions of years, mammoth, dire wolves, sabre toothed cats, and other megafauna.
With food less plentiful the Younger Dryas caused humanity to start farming, starting the Neolithic, the beginnings of civilisation. Hesiod calls this the Silver Age, which is marked by a continuation of the belief in animism and the rule by matriarchy. The melting ice of the last ice age caused sea levels to rise by hundreds of metres giving rise to the world-wide flood myths, it caused widespread conflict as people were forced to move.
For defence people banded together into cities, the chaos gave rise to an explosion of technology, writing was invented, so was organised religion. Gods such as Zeus replaced the honouring of nature spirits. Patriarchy replaced matriarchy, women rapidly falling to servitude. Bronze replaced stone, so began the Bronze Age.
Both Hesiod and Ovid comment that the Bronze Age is the age of war. People live in cloth of bronze and houses of bronze said Hesiod, these people never ate bread, a reference to the mentality of obtaining food through war rather than honest farming.
Relevant only to the Greek world Hesiod adds that the Bronze Age rolls into the Heroic Age. The age of heroes is the age when Troy fell, which textual and archaeological sources pin down to 1250 BCE. Herodotus mentions the Greek heroic superman Heracles running around Greece 900 years before he was born, circa 1300 BCE. Evidently based on a historical figure Heracles seems to rapidly gain cult status. The poison arrows from the slain Hydra of Heracles was used to kill Paris in the Trojan War. Heracles a few decades before the Trojan War was serving Jason as an Argonaut in his quest for the Golden Fleece.
Greece came down with a bump when climate change in 1200 BCE caused a rapid freeze sending the people in the north of the world southwards. By land and sea the Mediterranean and the Middle East was flooded by invaders including the Sea Peoples. Empires were destroyed, cities burned, the Bronze Age fell into a dark ages it would not emerge from for hundreds of years. The trade routes in bronze collapsed, so people turned to iron for their needs, the Bronze Age ended. For locations such as Britain the Iron Age came later, as a result of another climate change event in around 750 BCE, which forced them into using hill forts, and the collapse of the use of bronze in favour of iron.
The Iron Age continues into this day marked by all our wonderful technology. This is a worse age than the Bronze Age, since war continues, but it is added with loss of ethics. Patriarchy rules, and anything female orientated in this world is despised and destroyed. I quote from Hesiod:
“Thereafter, would that I were not among the men of the fifth generation, but either had died before or been born afterwards. For now truly is a race of iron, and men never rest from labour and sorrow by day, and from perishing by night; and the gods shall lay sore trouble upon them. But, notwithstanding, even these shall have some good mingled with their evils. And Zeus will destroy this race of mortal men also when they come to have grey hair on the temples at their birth. The father will not agree with his children, nor the children with their father, nor guest with his host, nor comrade with comrade; nor will brother be dear to brother as aforetime. Men will dishonour their parents as they grow quickly old, and will carp at them, chiding them with bitter words, hard-hearted they, not knowing the fear of the gods. They will not repay their aged parents the cost their nurture, for might shall be their right: and one man will sack another’s city. There will be no favour for the man who keeps his oath or for the just or for the good; but rather men will praise the evil-doer and his violent dealing. Strength will be right and reverence will cease to be; and the wicked will hurt the worthy man, speaking false words against him, and will swear an oath upon them. Envy, foul-mouthed, delighting in evil, with scowling face, will go along with wretched men one and all. And then Aidos and Nemesis, with their sweet forms wrapped in white robes, will go from the wide-pathed earth and forsake mankind to join the company of the deathless gods: and bitter sorrows will be left for mortal men, and there will be no help against evil.”
Humanity is in a bad situation with so many economic, social and political troubles, in a paradigm of greed, waste and inefficiency. Science predicts what happens when any system is abused so that it becomes unsustainable, it collapses into anarchy as per the Second Law of Thermodynamics. Climate change is in motion with extreme floods, storm and drought, a hand that will collapse a house of cards. The ending of the Iron Age is on the horizon, I hope the next age will be better.