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Claim analyzed
Science“International logistics and shipping account for approximately 11% of total product-related carbon footprints worldwide.”
The conclusion
The 11% figure is real but applies to the entire logistics sector — freight transport plus warehousing and port operations — not to "international logistics and shipping" alone. Authoritative sources such as ISO and the World Economic Forum attribute roughly 8% of global emissions to freight transport, rising to ~11% only when warehousing and port infrastructure are included. International maritime shipping specifically accounts for approximately 2–3% of global greenhouse gas emissions according to the IMO, UN, and OECD. The claim misattributes a broader statistic to a narrower category.
Based on 17 sources: 3 supporting, 9 refuting, 5 neutral.
Caveats
- The 11% figure cited in ISO and DHL/WEF sources explicitly includes warehousing and port operations — categories distinct from shipping and freight transport alone.
- International maritime shipping is consistently estimated at 2–3% of global GHG emissions by the IMO, UN, and OECD — far below the 11% claimed.
- 'Product-related carbon footprints' implies a life-cycle assessment framework, but the underlying 11% statistic measures logistics as a share of total global emissions, not as a share of product-level carbon footprints — these are different accounting methodologies.
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Sources
Sources used in the analysis
Freight generates about 8% of global greenhouse gas emissions, and including warehousing, this figure rises to 11%. Logistics and transport account for more than one-third of global CO2 emissions.
In 2022, there were an estimated 858 million tonnes of CO2 emissions globally from the shipping industry... By contrast with global CO2 emissions from air transport, which fell by 46% between 2019 and 2020 and remained 21% below 2019 levels in 2022, total CO2 emissions from global shipping fell by only 4% in 2020, and by 2022 they were 2% higher than in 2019.
Logistics and transport contribute about 37% of global CO2 emissions, making it a carbon-intensive industry chain, the largest emitting sector in many developed countries, with the proportion continuing to increase.
international shipping is responsible for three per cent of global greenhouse gas emissions... Nearly 90 per cent of global cargo is moved this way. But this vital industry comes with an added cost: international shipping is responsible for three per cent of global greenhouse gas emissions.
The World Economic Forum (WEF) and the Climate Portal estimate that 11% of global greenhouse gas emissions are directly attributable to logistics processes. Of these emissions, 8% are due to transportation and 3% are due to warehousing and ports.
The freight industry emits about 8% of total CO2 annually. Shipping accounts for about 2.5% of global pollution, producing around 940 million tons of CO2 per year.
A typical company's supply chain accounts for 80% of its GHG emissions and more than 90% of its contribution to air pollution generated in the production and distribution of a consumer product.
The logistics industry's carbon emissions account for at least one-quarter of global carbon emissions. The European Environment Agency predicts that without mitigation measures, logistics carbon emissions could rise sharply to 40% by 2050.
The global maritime shipping industry was responsible for around two percent of global greenhouse gas emissions (GHG) in 2023.
International shipping accounted for 2.89% of total global anthropogenic CO2 emissions in 2018, equivalent to 1,056 million tonnes.
Over the past 20 years, with rapid global trade growth, trade-related carbon emissions have increased by 90%, with air freight growing particularly fast due to its high greenhouse gas intensity. Three-quarters of global goods are transported by sea.
According to the World Economic Forum, the global transportation industry is responsible for up to a quarter of all greenhouse gas emissions, with freight logistics accounting for about 10 percent.
At global level, air cargo generates roughly 5% of logistics-sector emissions, which itself accounts for about 8% of global greenhouse gas (GHG) emissions (GLEC Framework v3. 1; Smart Freight Centre).
In the global carbon emissions total, the large logistics industry accounts for 23% of carbon emissions, and in developed countries like the UK and France, it is the largest emitting sub-sector.
Total global anthropogenic GHG emissions are approximately 50-60 GtCO2e annually (IPCC AR6, 2022). Freight transport (including road, rail, sea, air) accounts for 8-11% of energy-related CO2 emissions per IEA and IPCC reports, with logistics often including broader supply chain elements like warehousing.
Global shipping is responsible for approximately 3% of global carbon dioxide (CO2) emissions, according to the International Maritime Organization (IMO).
Ships transport around 80% of the world’s cargo... which is why 3% of global emissions come from shipping – slightly more than the 2.5% of emissions from aviation.
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Expert review
How each expert evaluated the evidence and arguments
Expert 1 — The Logic Examiner
The only sources that yield an ~11% figure (ISO: freight ~8% rising to 11% including warehousing [1]; DHL/WEF summary: 8% transport + 3% warehousing/ports [5]) are about the broader logistics sector (freight plus facilities like warehousing/ports), whereas multiple other sources put international maritime shipping alone at ~2–3% of global GHG [4][9][10][16], so inferring that “international logistics and shipping” specifically is ~11% commits a scope shift. Because the claim asserts a specific share for “international logistics and shipping” of “total product-related carbon footprints worldwide,” but the evidence either measures global logistics-sector emissions (not product-footprint share, not necessarily international-only) or measures shipping-only emissions (far below 11%), the conclusion does not logically follow and is best judged false/misleading rather than proven true.
Expert 2 — The Context Analyst
The claim omits that the widely cited ~11% figure refers to the broader logistics sector (freight plus warehousing/ports) rather than “international shipping” specifically, while multiple sources put international maritime shipping alone at ~2–3% of global GHG emissions (e.g., ISO's own breakdown of 8% freight rising to 11% with warehousing [1] versus UN/Statista/IMO-style figures for shipping [4][9][16]). With full context restored, the statement as written (“international logistics and shipping” and “product-related carbon footprints worldwide”) is scope-mismatched and gives a misleading overall impression, so it is effectively false.
Expert 3 — The Source Auditor
The highest-authority sources in this pool — Source 1 (ISO, high-authority) and Source 4 (UN News, high-authority) — tell different but compatible stories: ISO's 11% figure explicitly encompasses freight transport (~8%) plus warehousing, while UN News's 3% refers narrowly to international maritime shipping alone. Source 5 (DHL Freight Connections, moderately high authority) corroborates the 11% figure but attributes it to the full logistics sector including warehousing and ports, not to "international logistics and shipping" as a standalone category. The claim's specific wording — "international logistics and shipping" — most naturally maps to maritime/air/road freight in cross-border contexts, not the broader logistics sector inclusive of warehousing; multiple independent high-authority sources (UN News, OECD Statistics Blog, Statista) consistently place international shipping alone at 2–3% of global GHG emissions, and even the sources that cite 11% do so only when warehousing is bundled in. The claim is therefore misleading: the 11% figure exists in credible sources but is being applied to a narrower category ("international logistics and shipping") than what those sources actually measure, making the attribution a misrepresentation of the underlying data.
Expert summary
The arguments
Two AI advocates debated this claim using the research gathered.
Argument for
Authoritative estimates explicitly place logistics/shipping-related activities at about 11% of global emissions when freight transport is combined with the broader logistics system (e.g., warehousing and ports): ISO reports freight at ~8% rising to 11% including warehousing (Source 1, ISO), and DHL summarizing WEF/Climate Portal likewise breaks this out as 8% transport + 3% warehousing/ports = 11% (Source 5, DHL Freight Connections). While some sources cite ~2–3% for international shipping alone (e.g., Source 4, UN News), that narrower figure does not contradict the motion's product-footprint framing because the 11% estimate refers to the end-to-end international logistics/shipping function embedded in product distribution rather than maritime shipping in isolation (Source 1; Source 5).
Your "product-footprint framing" reinterpretation is a post-hoc rationalization — the claim explicitly states "international logistics and shipping," not "end-to-end supply chain logistics," and you cannot retroactively redefine the claim's scope to rescue it from its own wording. Furthermore, your reliance on Source 1 (ISO) and Source 5 (DHL Freight Connections) actually undermines your position, since both sources explicitly attribute the 11% figure to the entire logistics sector including warehousing and ports — categories that are categorically distinct from "international logistics and shipping" — meaning you are committing the fallacy of equivocation by treating two different scopes as interchangeable.
Argument against
The claim conflates total logistics (including warehousing) with "international logistics and shipping" specifically — a critical definitional error, as Source 4 (UN News), Source 9 (Statista), Source 10 (Gitnux), and Source 16 (All Forward) consistently place international shipping's share of global GHG emissions at just 2–3%, not 11%. Even the sources that cite 11% — such as Source 1 (ISO) and Source 5 (DHL Freight Connections) — explicitly attribute that figure to the entire logistics sector including warehousing and ports, making the claim's attribution of that percentage solely to "international logistics and shipping" a fundamental misrepresentation of the data.
You're attacking a straw man by treating the motion as “maritime shipping only,” but the claim is about international logistics/shipping as a product-distribution system, and ISO explicitly frames the relevant scope as freight plus logistics infrastructure—~8% for freight rising to ~11% when warehousing is included (Source 1, ISO), mirrored by the 8% transport + 3% warehousing/ports breakdown (Source 5, DHL Freight Connections). Your 2–3% citations (e.g., Source 4, UN News; Source 9, Statista; Source 16, All Forward) don't refute 11% because they measure a narrower slice (international shipping alone) rather than the end-to-end logistics activities embedded in product-related footprints that the motion is clearly invoking.