Because of how badly we humans have treated
soils and animals and how we destroyed bio-diversity, it is understandable that
people are looking for other ways of producing food. The food tech sector hosts legions of entrepreneurs
(mostly with background in the IT sector) seeking venture capital and
researchers looking for grants to “disrupt” a sector which they claim is
archaic. Most of them are based on the view that farming in general, and
livestock farming in particular, is inefficient and wasteful. The environmental
journalist George Monbiot writes in an article in the Guardian titled Lab-grown food will soon destroy farming – and save the planet.
“Eating is now a moral minefield, as
almost everything we put in our mouths – from beef to avocados, cheese to
chocolate, almonds to tortilla chips, salmon to peanut butter – has an
insupportable environmental cost. But just as hope appeared to be evaporating,
the new technologies I call farmfree food create astonishing possibilities to
save both people and planet. Farmfree food will allow us to hand back vast
areas of land and sea to nature, permitting rewilding and carbon drawdown on a
massive scale.“
One of the promising initiatives mentioned in
the article is the Finnish company, Solar foods. It claims that it has found a way
to commercially produce hydrogen oxidized bacterial protein from electricity.
The technology is actually known since the 1960s and has not taken off because
of the prohibitive costs. In a research article, co-written by the founders of
Solar Foods as late as 2019, it is concluded, that only the cost of energy
required to produce microbial protein is higher than the price of soybeans,
even if capital and other operational costs are not taken into account. The
production of 1 kg of microbial biomass would require 10 kWh of electricity. On an energy basis it will require five
times as much energy to produce the bacterial biomass than is contained in the
product. The
electricity needed to feed the world with this kind of product would be more
than the total electricity production in the world according to my calculations.
An indoor farm in Mongolia, photo: Gunnar Rundgren |
Another modern technology promising to feed the
world with low environmental impact is indoor vertical hydroponic farms in urban
areas. It is possible to produce lettuce in high towers with automated systems.
But the fact that it is possible doesn’t mean it is viable on a larger scale,
and even less that it will take place in the cities. It can be an interesting
architectural and engineering challenge to construct green high rises. It can
increase the commercial value of the property to have an indoor farm in the
basement and it can of course be a marketing gimmick for a supermarket to grow
its own lettuce in a green dome inside the shop. But it has little relevance
for feeding the population. This is also
demonstrated by that the commercial application are all about growing lettuce,
basil, pak choy or herbs, crops which provide almost no food energy or proteins.
The real pioneer of indoor farming was clandestine marihuana growing. Where
marihuana is legalized, the production moves into the natural light
instead.
The claims of environmental benefits of bacterial
protein and indoor farms are not backed by facts. The main reason is the
energy, water and land nexus. In-door production of lettuce
requires in the range of 2000 kWh per square meter growing area (more is required for the
production of tomatoes or potatoes). Only 1.5 square meter per capita of
such production would consume the total global production of electricity, which in itself shows how absurd
the idea is that it could “feed the world”. While water and land are possibly
“saved” at the site of production, the land and water footprint of energy
production is huge. Exactly how big varies considerably between the various
forms of energy and how you calculate.
If an indoor farm would be powered by solar
energy, at least an area ten times larger than each layer of cultivation would
be needed for the solar panels. And this is only for the light. In addition to
light one needs energy for ventilation, cooling, water pumping and purification
etc. The land use for other energy forms can be bigger or smaller than for
solar panels, but in any case the land use is substantial.
The claims of saving water are dubious to say
the least. Indoor vertical farms use municipal water which is very clean
and very resource demanding. One can’t compare that water to rain falling on a field which
proponents of indoor farming do when they talk about how much water is saved. Energy production also requires a
lot of water, varying depending on energy source and system boundaries. If one include cooling water for
nuclear power and the water in dams for hydroelectricity they use very high
amounts of water, otherwise little. With an average water footprint of
20 litre per kWh, the use of water for one single pot
of 40 gram of basil grown in an indoor farm in Sweden increases from 2.5 litre
to 30 litres.
For lab meat, there is no commercial production
and there are only theoretical comparisons with real meat. Still, the environmental impact of fake
meat might be in a range close to that of real meat.
The messages of the
techno-optimists are both deceptive and dangerous as it makes people believe
that most problems can be solved by technological innovation which in turn draws
attention and resources away from other solutions. While technological
development can be useful, by and large we already have the technologies needed
to feed the world’s population with healthy food in a sustainable way. The
challenges are mainly social, economic and political. For example, a fair
distribution of food would eradicate hunger and eating of local, unprocessed
organic foods would considerably reduce obesity and malnutrition.
The notion that we best
protect the wild by letting it be is mistaken. For sure, there are places which
could benefit from the total exclusion of humans but by and large, nature
conservation is much more
successful when it is managed by local people. In a capitalist economy, it
is also naïve to believe that land that
is “saved” by migrating food production into factories in some magical way
would be restored to pristine nature. The arable land that has been abandoned
as a result of productivity gains in my native Sweden has mostly been converted
into monoculture forest plantations. Ninety percent of our semi-natural
grasslands have to a large extent been converted from very rich biodiverse
areas to monoculture forests. Also this development was caused by productivity
gains in arable farming making it more economic to feed cattle and sheep with crops
than letting them graze.
In
a panel recently (Youtube video), in which I also participated, George
Monbiot had adjusted his arguments around farm free foods as being mainly a
kind of insurance against an anticipated collapse of food production in the
light of the climate crisis. While I totally agree that humanity need to do
whatever it can to reduce greenhouse gas emissions, I don’t think that the “looming
food crisis narrative” serve us. It was exactly that narrative that initiated
the Green Revolution with all its negative side effects. It is also that
narrative which is used by proponents of GMOs, the pesticide industry and all
others promoting “more of the same”. I believe the perspectives of Julia
Lernoud, Hindou
Oumarou Ibrahim and myself with an emphasis on local food landscapes, food
sovereignty, consumer-producer direct cooperation, and ecological adaptation
are more relevant. The corona crisis also demonstrates that such systems are
resilient alternatives to a global food system. A diverse localized food
production system will also be much better suited to adapt to climate change.
Farm free foods and food
tech can also be seen as an expression of a desire to decouple human
development from nature. Even if we could fulfill the food tech dream to free
us from the limits of nature, it would leave us empty, free from meaning.
Instead of de-coupling human civilization from nature, we need to live in and
by nature. We are fooling ourselves and betray the rest of the living by
pretending we are a species that don't need the rest of the living – after all we are nature.