Which Foods Have the Greatest Environmental Impact?
The quantity of greenhouse gases (GHGs) generated by our food can vary considerably across the global food supply chain.
In fact, the difference between specific food types can vary by orders of magnitude, meaning what we eat could be a significant factor impacting GHG emissions on the environment.
Today’s modified chart from Our World in Data relies on data from the largest meta-analysis of food systems in history. The study, published in Science was led by Joseph Poore and Thomas Nemecek to highlight the carbon footprint across different food types across the world.
The Foods With the Highest Carbon Footprint
Worldwide, there are approximately 13.7 billion metric tons of carbon dioxide equivalents (CO2e) emitted through the food supply chain per year.
Across a database extending through 119 countries and 38,000 commercial farms, the study found that, unsurprisingly, beef and other animal products have an outsize effect on emissions.
For example, one kilogram (kg) of beef results in 60 kg of GHG emissions—nearly 2.5x the closest food type, lamb and mutton. In contrast, the same weight of apples produce less than one kilogram of GHG emissions.
|GHG Emissions per 1 kg Produced
|Beef (beef herd)
|Lamb & Mutton
|Beef (dairy herd)
|Fish (wild catch)
|Wheat & Rye
When it comes to plant-based foods, chocolate is among the highest GHG emitters. One kilogram of chocolate produces 19 kg of GHGs. On average, emissions from plant-based foods are 10 to 50 times lower than animal-based types.
Bottom line, it is clear that the spectrum of emissions differs significantly across each food type.
Food Supply Chain Stages
The food supply chain is complex and nuanced as it moves across each stage of the cycle.
Although the steps behind the supply chain for individual foods can vary considerably, each typically has seven stages:
- Land Use Change
- Animal Feed
Across all foods, the land use and farm stages of the supply chain account for 80% of GHG emissions. In beef production, for example, there are three key contributing factors to the carbon footprint at these stages: animal feed, land conversion, and methane production from cows. In the U.S., beef production accounts for 40% of total livestock-related land use domestically.
On the other end of the spectrum is transportation. This stage of the supply chain makes up 10% of total GHG emissions on average. When it comes to beef, the proportion of GHGs that transportation emits is even smaller, at just 0.5% of total emissions.
Contrary to popular belief, sourcing food locally may not help GHG emissions in a very significant way, especially in the case of foods with a large carbon footprint.
The Rise of Plant-Based Alternatives
Amid a growing market share of plant-based alternatives in markets around the world, the future of the food supply chain could undergo a significant transition.
For investors, this shift is already evident. Beyond Meat, a leading provider of meat substitutes, was one of the best performing stocks of 2019—gaining 202% after its IPO in May 2019.
As rising awareness about the environment becomes more prevalent, is it possible that growing meat consumption could be a thing of the past?
The World’s Top Cocoa Producing Countries
Here are the largest cocoa producing countries globally—from Côte d’Ivoire to Brazil—as cocoa prices hit record highs.
The World’s Top Cocoa Producing Countries
West Africa is home to the largest cocoa producing countries worldwide, with 3.9 million tonnes of production in 2022.
In fact, there are about one million farmers in Côte d’Ivoire supplying cocoa to key customers such as Nestlé, Mars, and Hershey. But the massive influence of this industry has led to significant forest loss to plant cocoa trees.
This graphic shows the leading producers of cocoa, based on data from the UN FAO.
Global Hotspots for Cocoa Production
Below, we break down the top cocoa producing countries as of 2022:
|2022 Production, Tonnes
|🇨🇮 Côte d'Ivoire
|🇩🇴 Dominican Republic
With 2.2 million tonnes of cocoa in 2022, Côte d’Ivoire is the world’s largest producer, accounting for a third of the global total.
For many reasons, the cocoa trade in Côte d’Ivoire and Western Africa has been controversial. Often, farmers make about 5% of the retail price of a chocolate bar, and earn $1.20 each day. Adding to this, roughly a third of cocoa farms operate on forests that are meant to be protected.
As the third largest producer, Indonesia produced 667,000 tonnes of cocoa with the U.S., Malaysia, and Singapore as major importers. Overall, small-scale farmers produce 95% of cocoa in the country, but face several challenges such as low pay and unwanted impacts from climate change. Alongside aging trees in the country, these setbacks have led productivity to decline.
In South America, major producers include Ecuador and Brazil. In the early 1900s, Ecuador was the world’s largest cocoa producing country, however shifts in the global marketplace and crop disease led its position to fall. Today, the country is most known for its high-grade single-origin chocolate, with farms seen across the Amazon rainforest.
Altogether, global cocoa production reached 6.5 million tonnes, supported by strong demand. On average, the market has grown 3% annually over the last several decades.
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