Ages of Gold
One way to appreciate the potential role of climate in human affairs is to observe what happens when—at least from a human-centric perspective—matters are going very well and the heavens appear to be smiling. Despite the occasional emphasis on eras of climate-driven disaster and deprivation, some historical epochs were wonderfully benevolent, times when the Sun’s warmth evidently manifested God’s bounty. One such era was the High Middle Ages, which coincided with a period of warming over large parts of the globe. Trade and commerce flourished, abundant harvests produced generous food supplies, and prosperity was conspicuously manifested in religious experiment and innovation. Such eras are often recalled through legendary and even exalted figures, such as St. Francis or Thomas Aquinas in the medieval European context. Whatever we term them, cultural golden ages have existed, and they have their foundations in climate conditions.