The British Library has unveiled a cache of historical records from Mughal India, dating to the 1600s, which offer a starkly detailed account of a society grappling with climate variability. For climate scientists, these documents are more than antiquarian curiosities. They are data points. They are evidence of how pre-industrial civilisations weathered environmental shifts, and of how our own technologically amplified world might learn from their fragility.
The collection, comprising administrative papers, agricultural logs, and personal correspondence, describes in precise terms the monsoon patterns, crop yields, and economic stresses of the period. One recurring theme is the vulnerability of agrarian society to seasonal fluctuations. A drought in 1630 is recorded as causing widespread famine, with grain prices tripling and reports of subsistence farmers abandoning their land. These are the same landscapes now threatened by extreme weather events in modern India, but with a crucial difference: the Mughal empire had no fossil fuel buffer, no globalised supply chain. They faced the brute force of climate variation with local resources and human resilience.
What makes these records extraordinary is their granularity. Scholars have long known about the Little Ice Age, which cooled the Northern Hemisphere between the 14th and 19th centuries, but evidence from South Asia has been scarce. The new documents confirm that during the 1600s, the Indian subcontinent experienced multiple severe droughts, likely linked to weakened monsoon circulation. This is a physical climate reality that sits at the intersection of history and science. The pattern of drought in Mughal India mirrors what we now observe: a warming planet disrupts the monsoon, leading to erratic rain and prolonged dry spells.
We are accustomed to thinking of climate change as a modern problem. But these records remind us that the earth’s climate has always been in motion. What has changed is the rate of change and the scale of human influence. Since the Industrial Revolution, we have injected over 700 billion tonnes of carbon dioxide into the atmosphere. The atmospheric concentration of CO2 has risen from 280 parts per million in 1750 to 420 parts per million today. The Mughals saw droughts that lasted years. We face the prospect of droughts that last decades, along with heat waves, wildfires, and superstorms.
The British Library’s find is a call to calibrate our sense of urgency. We cannot directly read the future from the past, but we can see the patterns. The Mughal records show that societies with robust governance and diversified agriculture weathered climate shocks better than those without. The empire’s response to the 1630 famine included tax remissions and grain distribution. It was a massive logistical effort, but it was insufficient to prevent mass suffering. Today, we have far greater technological capacity, but also far greater complexity. Our energy systems, food supply, and infrastructure are interconnected on a global scale. A failure in one part of the system can cascade.
This is not a reason for despair. It is a reason for precision. The energy transition away from fossil fuels is the single most important intervention we can make. Solar and wind power are now cheaper than coal and gas in most parts of the world. Battery storage is improving. Electrification of transport and industry is underway. But the pace is still too slow. Every fraction of a degree of warming increases the risk of crossing tipping points, such as the collapse of the Greenland ice sheet or the dieback of the Amazon rainforest. The Mughal records are a reminder of what is at stake: not just economic growth, but the capacity of societies to function.
These documents also serve as a warning about the biosphere. The Mughal empire was a flourishing civilisation that left a rich cultural and scientific legacy. But its people lived in close dependence on the natural world. When the land failed, the empire faltered. We now live in a world where we have altered the land and the atmosphere so profoundly that we are diminishing the very systems that sustain us. The loss of biodiversity, the acidification of the oceans, the depletion of freshwater: these are not separate issues. They are symptoms of the same fundamental imbalance.
The British Library has made these records available online, allowing researchers worldwide to analyse them. This is a gesture of openness, of sharing knowledge across borders and disciplines. It is an example of how science and history can inform each other. As a climate correspondent, I see these documents as a mirror. We look at the Mughal past, but we see our own present amplified. The question is not whether the climate will change. It is whether we will act with the urgency and foresight that the situation demands.
We have the data. We have the technology. What remains to be seen is whether we have the collective will to use them. The Mughal records say: you are not immune. The planet does not care about your empire or your economy. It only responds to physics. And the physics is clear. We must decarbonise. We must adapt. We must do it now.
