Dave Borlace cuts through the noise of climate technology to expose a quieter, more fundamental bottleneck: the sheer momentum of human population growth combined with our wasteful consumption patterns. While most discourse fixates on carbon capture machines, Borlace argues that without addressing how we eat and how many of us there are, no amount of green tech will suffice. This is a rare, data-driven reckoning with the arithmetic of survival that shifts the blame from individual guilt to systemic inefficiency.
The Momentum of Growth
Borlace begins by dismantling the common misconception that we are facing a sudden, uncontrollable population explosion. He points to United Nations data showing that global fertility rates have plummeted since the mid-20th century, dropping from over five children per woman to just below 2.5 today. "You'd be forgiven for thinking that we had ourselves a full scale completely out of control population explosion going on but here's the remarkable thing there's been a massive drop in fertility rate since the second half of the 20th century," he observes. The real driver of future growth, he explains, is not that people are having more babies, but that there are simply more people alive to have them. Using a visual analogy of stacked boxes, Borlace illustrates how the current age structure guarantees growth for decades, even if fertility rates stabilize immediately. "Within three generations with no increase in fertility rates and no increase in life expectancy just by the inevitable fill up of human beings based on how many people are on the planet today you get to 10 10 billion people," he notes. This demographic inertia is a critical insight; it means the 11 billion figure projected for 2100 is already baked into the cake, regardless of future policy changes on birth rates.
Critics might argue that focusing on population numbers risks veering into Malthusian alarmism, distracting from the more immediate issue of resource distribution. However, Borlace's data on the sheer scale of the coming demographic wave suggests that ignoring this momentum is a strategic error.
The Land Use Equation
The piece pivots from population numbers to the physical reality of feeding them. Borlace uses stark statistics to reveal that half of all habitable land is currently dedicated to agriculture, yet the efficiency of this land use is abysmal. He highlights that livestock farming consumes 77% of agricultural land but yields only 17% of the world's calories. "Straight off the bat if anybody tells you you won't get all your protein if you don't eat meat they're just plain wrong," he asserts. This reframing is powerful because it challenges a deeply ingrained cultural assumption with hard numbers. The argument gains further traction when he contrasts global diets. If the entire world adopted the diet of Bangladesh or India, we would need less than 25% of our habitable land. Conversely, if we all ate like the average Australian or Argentine, we would require 158% and 162% of the planet's available land, respectively.
"Those global disparities are a insane B unnecessary and C unsustainable."
Borlace's analysis of the "Western mindset" that equates a real meal with dead animal flesh is particularly sharp. He notes that beef production is such a "catastrophically profligate overuse of precious resources" that removing it from the equation would solve the majority of the resource problem immediately. This evidence is compelling because it moves the conversation from abstract climate goals to concrete, daily choices. A counterargument worth considering is that dietary shifts are difficult to enforce globally due to cultural sovereignty and economic disparities in food systems. Yet, Borlace wisely avoids demanding total veganism, suggesting instead that a 50% reduction in meat intake would bring emissions and land use down to vegetarian levels.
The Verdict on Sustainability
The core of Borlace's argument is that the question of whether Earth can sustain 11 billion people is not a biological limit, but a behavioral one. "The answer to that crucial question of course is that it depends on how we live and use the resources that are available to us," he concludes. He emphasizes that we do not need to live in "sackcloth and Ashes and ritual weekly self flatulation" to solve this; we simply need to align our consumption with the planet's actual capacity. The most effective part of his coverage is the demonstration that the solution lies in efficiency and moderation rather than technological miracles or population control measures. The biggest vulnerability in the argument is the assumption that wealthy nations can voluntarily reduce consumption without significant political upheaval or economic restructuring. Nevertheless, the data provides a clear roadmap: the path to sustainability is paved with plant-based diets and a recognition that our current lifestyle is mathematically impossible to scale.
Bottom Line
Borlace delivers a necessary corrective to the techno-optimist narrative, proving that the biggest barrier to a sustainable future is not a lack of invention, but a surplus of waste. The strongest element of his case is the irrefutable data linking Western meat consumption to land scarcity, while the argument's fragility lies in the political will required to change entrenched dietary habits. Readers should watch for how global policy begins to address the disconnect between population momentum and resource efficiency in the coming decade.