Four decades ago Norman Borlaug, accepting the Nobel Peace Prize for his work on raising crop yields worldwide (the “green revolution”), said: “I have only bought you a 40-year breathing space to stabilize your population.”
In 1970, when Borlaug got his prize for postponing the onset of famine for 40 years, the world’s population was 3.7 billion. Today, it is 7 billion. The U.S. Census Bureau expects only 2 billion more in the next 34 years, and we might actually stabilize the population by the end of the century — but we will have to feed almost three times as many people as there were in 1970. How on earth can we do that?
Actually, you don’t need to panic right away. The UN’s Food and Agricultural Organization recently estimated that the extra people can be fed, at least until we hit 9 billion, if crop yields rise by 1 percent a year and the world’s farmland expands by 13 percent.
This takes no account of the ecological damage done by removing even more land from the natural cycles, and it omits details like the looming collapse of most of the world’s big fisheries. Given the frequent forecasts of doom by over-population, however, it is a surprisingly reassuring assessment.
But this is a forecast that ignores the probable effects of global warming on food production, and those will be dire. In some places a hotter climate will actually increase food production, but in far more places crop yields will fall.
The rule of thumb is that we will lose 10 percent of global food production with every rise in average global temperature of 1.8 degrees F. Since we are virtually bound to see an increase of twice that before global average temperature stops rising (if it does), that’s one-fifth of world food production gone.
It will be considerably worse in some places. And a crash in food production doesn’t just bring hunger. It brings chaos: collapsing governments, waves of starving climate refugees crossing borders, even wars between countries that depend on the same river for irrigation water.
Military planners in many countries think that this may be the dominant factor in world politics in 25 years. That will make it even harder to get global agreement on measures to stop further warming, so they are making contingency plans for really ugly outcomes. But what if you could make food production independent of climate?
Specifically, what if you could make meat production independent of climate? Don’t use 70 percent of the world’s agricultural land to grow grain that feeds the animals we then kill and eat. Just grow the meat itself, taking stem cells from a cow, a sheep or a chicken and encouraging them to grow in a nutrient solution.
It’s already being done in labs, but the quantities are small and the meat is still a long way from having the taste and texture that would make it a real candidate to replace meat from live animals. But those are details that can be sorted out with more research and more money. The point is that this could allow people to go on eating meat without trashing the climate in the process.
People are not going to stop eating meat: demand is going up, not down. But if “cultured” meat can be made identical in taste and texture to “real” meat from animals, and if it can be grown in large quantities at a competitive cost, the ecological benefits would be immense. The political benefits might be even greater.
If half of the meat people eat was “cultured,” greenhouse gas emissions would drop sharply (about one-fifth of global emissions from human sources come from meat production). About half the land that has been converted to grain-growing in the past century could be returned to natural forest cover.
“Cultured” food may be commercially available in only a few years if the research is pushed hard. Indeed, the animal welfare group PETA has offered a $1 million prize for anybody who can demonstrate lab-made meat in commercial quantities by June 30 this year, and they think that one of the research teams now working on the problem may claim the award.
But it isn’t being pushed fast enough. “There is very little funding,” Professor Julie Gold, a biological physicist at Chalmers Technological University in Gothenburg, Sweden, told the “Observer” newspaper recently. “What it needs is a crazy rich person.”
Gwynne Dyer is a London-based independent journalist whose articles are published in 45 countries.