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Population growth and a global food crisis

Dave Borlace dismantles the most persistent myth in climate discourse: that overpopulation is the primary driver of our looming food crisis. Instead, he presents a far more unsettling reality where fertility rates are plummeting globally, yet we face a perfect storm of climate volatility and a finite window of peak demand that traditional agriculture cannot survive. This is not a story about too many people; it is a story about a broken system colliding with a warming planet right now, not in some distant future.

The Myth of Malthus vs. The Reality of Climate

The author immediately pivots away from the usual demographic alarmism, noting that while the population is rising toward 10 billion, the engine driving that growth is actually sputtering. Borlace writes, "The real problem is too many people... But is that being just a little bit too simplistic?" He supports this by highlighting that the global fertility rate has dropped from nearly five children per woman in the 1950s to about 2.3 today, with major economies like China and the US falling well below the replacement level of 2.1. This reframing is crucial because it shifts the blame from human numbers to human systems.

Population growth and a global food crisis

However, the demographic transition brings its own complexities. Borlace explains that we are currently in a "temporary phenomenon" where the sheer number of young people entering adulthood creates a population swell, even as birth rates fall. He illustrates this with Hans Rosling's famous visualization of the "inevitable fill up of adults," noting that once this generation ages, numbers will stabilize and then decline. Critics might argue that focusing on the mid-century peak ignores the immediate strain on resources in regions like Sub-Saharan Africa, where fertility remains high. Yet, Borlace's point stands: the era of exponential population growth is ending, but the pressure on food systems is just beginning.

"Our agricultural system was designed for a climate that doesn't exist anymore."

This observation lands with particular force because the evidence is no longer theoretical. Borlace points to a brutal convergence of events: flooded fields in China, record droughts in southern Africa, and the driest autumn in US history. He notes that these catastrophes occurred at barely 1.3° C of warming. The implication is stark: we are losing the race between climate destabilization and our ability to innovate. If current trends continue, staple crops like maize could see yields fall by a quarter by the end of the century. This is not a distant prophecy; it is a current trajectory that threatens the backbone of global food security.

The Technological Pivot

If the old system is broken, what replaces it? Borlace moves from diagnosing the problem to outlining a radical, albeit controversial, solution set. He acknowledges that regenerative farming and reducing food waste are essential, but he argues they are insufficient on their own. Instead, he champions the rapid scaling of cellular agriculture and precision fermentation. Borlace writes, "A few years ago, I did a video on a report by a think tank called Rethink X. They argue that a combination of cellular agriculture and precision fermentation could transform the food system... by the 2030s."

The author is careful to distinguish between hype and reality, noting that while the timeline might be optimistic, the science is undeniably working. He details how cultivated chicken is now legally sold in Singapore and how precision fermentation is already producing cow-free dairy proteins in Israel and Europe. The efficiency gains are staggering: these methods require up to 99% less land and 90% less water than conventional livestock. Borlace asserts, "If we ignore those numbers, then at least in my view, we need our bloody heads examining." This blunt assessment cuts through the cultural resistance to "lab-grown" food, framing it not as a gimmick but as a survival necessity.

"The real future is probably an all of the above approach."

Borlace wisely avoids the trap of presenting technology as a silver bullet. He argues for a hybrid model where smarter farming, better global trade, and dietary shifts in wealthy nations work in tandem with high-tech solutions. He admits that the transition won't be instant, noting that we cannot "flick a switch and instantly move to a completely different global food production system." This nuance is vital; it prevents the piece from sounding like a techno-utopian fantasy and grounds it in the messy reality of global logistics and human behavior.

Bottom Line

Dave Borlace's most compelling argument is that the food crisis is a race against time, not a result of overpopulation, and that the tools to win it are already in the lab. The piece's greatest strength is its refusal to accept doom as inevitable, instead presenting a clear, actionable to-do list that includes radical technological adoption. However, the argument's vulnerability lies in its reliance on the speed of regulatory approval and consumer acceptance for lab-grown foods, which remain significant hurdles in many parts of the world. The reader should watch for how quickly these technologies move from niche markets to global staples, as that will determine whether the "all of the above" strategy succeeds or fails.

Sources

Population growth and a global food crisis

by Dave Borlace · Just Have a Think · Watch video

For most of the last 80 years or so, we humans have been on a remarkable winning streak when it comes to food. The so-called green revolution that came about between the 1940s and 1970s produced better seeds, better fertilizers, better machinery, and at least as a global average anyway, a whole lot more calories per hectare. But in the last few years, something's changed. Look at these maps from a brilliant recent piece in the Guardian.

They show how climate breakdown is beginning to hit the world's food system now. Not in 2050, not in 2100. Right now, fields flooded in China, record droughts in southern Africa, England's second worst wheat harvest since records began. France's smallest soft crop in 41 years, and in the United States, the driest autumn ever recorded with over 20 billion dollars worth of crops wiped out.

And all of these climate related impacts occurred at barely 1.3° C of warming above pre-industrial levels. All of that might reasonably raise the question, can we keep feeding a growing population on a hotter, more volatile planet? And it turns out the answer is not quite what you might be thinking. Hello and welcome to Just Have a Think.

For decades, global crop yields were climbing steadily upwards. But in the last 10 to 15 years, that trend has begun to level off. And if we stay on a high emissions pathway, the latest modeling suggests yields of staple crops, particularly maize or corn, could fall by as much as a quarter by the end of the century. That's a big deal because maize is one of the world's most important calorie crops.

It feeds livestock, it feeds people, and it forms the backbone of food security in large parts of the global south. And the thing is, these projections aren't wild speculation. They're based on real world events we're already seeing. The takeaway from all this, according to most experts in the field, is pretty straightforward.

Our agricultural system was designed for a climate that doesn't exist anymore. And the climate trajectory we're on now is really only just getting started. Now, of course, the minute you start talking about food stress, there will always be people who jump in with a comment like, "Well, the real problem is too many people." But is that being just a little bit too simplistic? I wonder.

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