`While it is clear that human activity affects our environment, the recent global warming alarmism seems deeply misplaced. Global warming long predates the Industrial Revolution, and here is a quote from Gibbon’s The Decline and Fall of the Roman Empire (published in the middle of the 18th century, at the very start of the Industrial Revolution:
Some ingenious writers have suspected that Europe was much colder formerly than it is at present; and the most ancient descriptions of the climate of Germany tend exceedingly to confirm their theory. The general complaints of intense frost and eternal winter are perhaps little to be regarded, since we have no method of reducing to the accurate standard of the thermometer the feelings or the expressions of an orator born in the happier regions of Greece or Asia. But I shall select two remarkable circumstances of a less equivocal nature. 1. The great rivers which covered the Roman provinces, the Rhine and the Danube, were frequently frozen over, and capable of supporting the most enormous weights. The barbarians, who often chose that severe season for their inroads, transported, without apprehension or danger, their numerous armies, their cavalry, and their heavy waggons, over a vast and solid bridge of ice.2 Modern ages have not presented an instance of a like phenomenon. 2. The reindeer, that useful animal, from whom the savage of the North derives the best comforts of his dreary life, is of a constitution that supports, and even requires, the most intense cold. He is found on the rock of Spitzberg, within ten degrees of the pole; he seems to delight in the snows of Lapland and Siberia; but at present he cannot subsist, much less multiply, in any country to the south of the Baltic. In the time of Cæsar, the reindeer, as well as the elk and the wild bull, was a native of the Hercynian forest, which then overshadowed a great part of Germany and Poland.3 The modern improvements sufficiently explain the causes of the diminution of the cold. These immense woods have been gradually cleared, which intercepted from the earth the rays of the sun. The morasses have been drained, and, in proportion as the soil has been cultivated, the air has become more temperate. Canada, at this day, is an exact picture of ancient Germany. Although situate in the same parallel with the finest provinces of France and England, that country experiences the most rigorous cold. The reindeer are very numerous, the ground is covered with deep and lasting snow, and the great river of St. Lawrence is regularly frozen, in a season when the waters of the Seine and the Thames are usually free from ice.
Note that Gibbon (just like Al Gore) attributes the warming to human activity, though, unlike Al Gore’s, his point of view is not currently accpted.
It actually gets better: Kyle Harper’s The Fate of Rome advances the theory that global COOLING was one of the factors responsible for Rome’s collapse, and the golden period of ”Five Good Emperors” (the end of the first and most of the second century AD) coincided with the warmest period of the time of the Roman empire.