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A sweeping new history of how climate change and disease helped bring down the Roman Empire
Here is the monumental retelling of one of the most consequential chapters of human history: the fall of the Roman Empire. The Fate of Rome is the first book to examine the catastrophic role that climate change and infectious diseases played in the collapse of Rome’s power—a story of nature’s triumph over human ambition.
Interweaving a grand historical narrative with cutting-edge climate science and genetic discoveries, Kyle Harper traces how the fate of Rome was decided not just by emperors, soldiers, and barbarians but also by volcanic eruptions, solar cycles, climate instability, and devastating viruses and bacteria. He takes readers from Rome’s pinnacle in the second century, when the empire seemed an invincible superpower, to its unraveling by the seventh century, when Rome was politically fragmented and materially depleted. Harper describes how the Romans were resilient in the face of enormous environmental stress, until the besieged empire could no longer withstand the combined challenges of a “little ice age” and recurrent outbreaks of bubonic plague.
A poignant reflection on humanity’s intimate relationship with the environment, The Fate of Rome provides a sweeping account of how one of history’s greatest civilizations encountered, endured, yet ultimately succumbed to the cumulative burden of nature’s violence. The example of Rome is a timely reminder that climate change and germ evolution have shaped the world we inhabit—in ways that are surprising and profound.
440 pages, Kindle Edition
First published October 2, 2017
The argument put forth in these pages is that to understand the prolonged episode we know as the fall of the Roman Empire, we must look at a great act of self-deception, right at the heart of the empire’s triumphant ceremonies: the undue confidence .. that the Romans had tamed the forces of wild nature. At scales that the Romans themselves could not have understood and scarcely imagined – from the microscopic to the global – the fall of their empire was the triumph of nature over human ambitions. The fate of Rome was played out by emperors and barbarians, senators and generals, soldiers and slaves. But it was equally decided by bacteria and viruses, volcanoes and solar cycles.
In reality, mortality has been a much wilder, more independent and unpredictable force than the strict laws of energy limits would predict...Seen in this frame [of chaotic climate- and bacteria-driven fortune or misfortune], the Malthusian laws are at last too narrow to endure.
All too often, the historical change that counts is also silent.
People never disappeared from the old territories of the Roman Empire, but their ways of life were simplified and localized.
Together, climate change and disease exhausted the remnants of the Roman imperial order. The demographic consequences were primary.
The reign of Justinian (A.D. 527 to 565) was beset by an epic, once-in-a-few-millennia cold snap, global in scale.
Without the deep movements of demography, models of the state and social order become weightless abstractions...The natural environment and human demography were acted upon by the state, the economy, and the social order, but they also acted and reacted upon them in turn, with a motive power of their own that had consequences at the highest levels of political organization.
The influx of capital and the integration of markets provided the means to colonize riskier environments...The mass-scale deployment of irrigation technology enabled the expansion of agriculture, straight into the teeth of ecologically forbidding circumstances.