Map Reveals How Food Flows From Farms to Tables Across U.S.
By Megan Konar
My team at the University of Illinois just developed the first high-resolution map of the U.S. food supply chain.
Our map is a comprehensive snapshot of all food flows between counties in the U.S. – grains, fruits and vegetables, animal feed and processed food items.
To build the map, we brought together information from eight databases, including the Freight Analysis Framework from Oak Ridge National Laboratory, which tracks where items are shipped around the country, and Port Trade data from the U.S. Census Bureau, which shows the international ports through which goods are traded.
We also released this information in a publicly available database.
This map shows how food flows between counties in the U.S. Each line represents the transportation of all food commodities, along transit routes, like roads or railways.
What does this map reveal?
1. Where Your Food Comes From
Now, residents in each county can see how they are connected to all other counties in the country via food transfers. Overall, there are 9.5 million links between counties on our map.
All Americans, from urban to rural are connected through the food system. Consumers all rely on distant producers; agricultural processing plants; food storage like grain silos and grocery stores; and food transportation systems.
For example, the map shows how a shipment of corn starts at a farm in Illinois, travels to a grain elevator in Iowa before heading to a feedlot in Kansas, and then travels in animal products being sent to grocery stores in Chicago.
2. Where the Food Hubs Are
At over 17 million tons of food, Los Angeles County received more food than any other county in 2012, our study year. It shipped out even more: 22 million tons.
California's Fresno County and Stanislaus County are the next largest, respectively. In fact, many of the counties that shipped and received the most food were located in California. This is due to the several large urban centers, such as Los Angeles and San Francisco, as well as the productive Central Valley in California.
We also looked for the core counties — the places that are most central to the overall structure of the food supply network. A disruption to any of these counties may have ripple effects for the food supply chain of the entire country.
We did this by looking for counties with the largest number of connections to others, as well as those that score highly in a factor called "betweenness centrality," a measurement of the places with the largest fraction of the shortest paths.
San Bernardino County led the list, followed again by a number of other California transit hubs. Also on the list are Maricopa County, Arizona; Shelby County, Tennessee; and Harris County, Texas.
However, our estimates are for 2012, an extreme drought year in the Cornbelt. So, in another year, the network may look different. It's possible that counties within the Cornbelt would show up as more critical in non-drought years. This is something that we hope to dig into in future work.
3. How Food Travels From Place to Place
We also looked at how much food is transported between one county and another.
Many of the largest food transport links were within California. This indicates that there is a lot of internal food movement within the state.
One of the largest links is from Niagara County to Erie County in New York. That's due to the flow of food through an important international overland port with Canada.
Some of the other largest links were inside the counties themselves. This is because of moving food items around for manufacturing within a county — for example, milk gets off a truck at a large depot and is then shipped to a yogurt facility, then the yogurt is moved to a grocery distribution warehouse, all within the same county.
The food supply chain relies on a complex web of interconnected infrastructure. For example, a lot of grain produced throughout the Midwest is transported to the Port of New Orleans for export. This primarily occurs via the waterways of the Ohio and Mississippi Rivers.
The infrastructure along these waterways — such as locks 52 and 53 — are critical, but have not been overhauled since their construction in 1929. They represent a serious bottleneck, slowing down innumerable supply chains nationwide, including that of grain. If they were to fail entirely, then commodity transport and supply chains would be completely disrupted.
Railroads are also important for moving grain. Fresh produce, on the other hand, is often moved around the country by refrigerated truck. This is due to the need to keep fresh fruits and vegetables — relatively high value agricultural products – cool until they reach the consumer.
In future work, we hope to evaluate the specific infrastructure that is critical to the U.S. food supply chain.
Megan Konar is an assistant professor in the Department of Civil and Environmental Engineering at the University of Illinois at Urbana-Champaign. Her research focuses on the intersection of water, food and trade. Her work is interdisciplinary, drawing from hydrology, environmental science, and economics.
Konar receives funding from the University of Illinois at Urbana-Champaign. National Science Foundation funding has supported research related to this article.
Reposted with permission from our media associate The Conversation.
- Sixth North Atlantic Right Whale Found Dead Prompts Concern ... ›
- Lobster Industry Ensnared in North Atlantic Right Whale Deaths ... ›
- First North Atlantic Right Whale Calf of the Season Spotted off ... ›
EcoWatch Daily Newsletter
By Heather Houser
Compost. Fly less. Reduce your meat consumption. Say no to plastic. These imperatives are familiar ones in the repertoire of individual actions to reduce a person's environmental impact. Don't have kids, or maybe just one. This climate action appears less frequently in that repertoire, but it's gaining currency as climate catastrophes mount. One study has shown that the reduction of greenhouse gas emissions from having one fewer child in the United States is 20 times higher—yes 2000% greater—than the impact of lifestyle changes like those listed above.
The Stickiness of Population<p>Only five years ago, there was minimal coverage of the child-free for climate movement. AOC is just one of many reasons it's lighting up now. New scientific analyses, scholarly debates, and social media conversations have shined a light on reproduction and climate. The influential <a href="https://www.drawdown.org/" target="_blank">Project Drawdown</a> framework for climate mitigation includes a list of solutions ranked by their potential impact, two of which—educating girls and providing access to family planning—they project will have <a href="https://www.drawdown.org/solutions/table-of-solutions" target="_blank">a greater combined impact</a> on reducing greenhouse gas emissions than almost all other climate solutions because of their effect on fertility rates.</p><p>In January 2020, <a href="https://academic.oup.com/bioscience/article/70/1/8/5610806" target="_blank">11,000 scientists signed onto a study that warned</a> about the unfolding climate emergency. The authors prescribe steps in six sectors that can prevent irreversible planetary collapse, including that "the world population must be stabilized—and, ideally, gradually reduced—within a framework that ensures social integrity." The framework they propose includes universal access to family planning as well as education and equity for young women. (Other <a href="https://doi.org/10.1073/pnas.1410465111" target="_blank" rel="noopener noreferrer">scientific takes</a> on population-based climate actions are more skeptical about their immediate impact given the scale of fertility reductions needed to balance out longer lifespans.)</p><p>Even before 2020, a new movement was afoot to address climate by forgoing reproduction. Blythe Pepino, a British musician in her 30s, formed BirthStrike in 2018 to build a community of people—typically women-identified—who have opted not to reproduce in response to the ecological and social crises that climate change is creating. In the wake of the Black Lives Matter protests this summer, the group recognized the need to acknowledge the oppression that colors conversations about reproduction as it relates to climate and so reformed itself into a support group for those grieving parenthood. Their new stated goal is to channel that loss into action on climate justice.</p><p>Organizations such as <a href="https://conceivablefuture.org/" target="_blank" rel="noopener noreferrer">Conceivable Future</a>, however, continue to keep reproduction at the fore. Led by climate activists Meghan Kallman and Josephine Ferorelli, Conceivable Future is raising awareness about how the climate crisis affects "<a href="https://conceivablefuture.org/about" target="_blank" rel="noopener noreferrer">intimate choices</a>" like reproduction. The Conceivable Future and now-defunct BirthStrike campaigns share ideological terrain with "<a href="https://www.npr.org/2016/08/18/479349760/should-we-be-having-kids-in-the-age-of-climate-change" target="_blank" rel="noopener noreferrer">population engineers</a>," a group of bioethicists who <a href="https://doi.org/10.5840/soctheorpract201642430" target="_blank" rel="noopener noreferrer">forward policies for</a> limiting the size of the global population through positive incentives like family planning classes and negative ones such as taxes on wealthy procreators. </p><p>In proposing specific policies rather than individual action, population engineers acknowledge the structures within which reproductive choices occur, everything from media influence to the tax code. Even with this shift to the structural, however, the racist, sexist, colonialist, and nativist legacies of the population question within environmentalism still plague child-free for climate. As do the historical and social injustices that constrain so-called choices.</p>
Racism and Xenophobia in Environmentalism<p>This summer and fall, the climate crisis and its correlated catastrophes—<a href="https://www.cbsnews.com/news/heat-wave-western-united-states/" target="_blank">extreme heat</a>, <a href="https://www.aljazeera.com/news/2020/07/14/a-third-of-bangladesh-underwater-after-heavy-rains-floods/" target="_blank">flooding</a>, <a href="https://www.theguardian.com/world/wildfires" target="_blank">wildfires</a>—are intensifying alongside Black Lives Matter uprisings and the <a href="http://www.yesmagazine.org/health-happiness/2020/06/09/coronavirus-public-health-social-justice/" target="_blank">coronavirus health disparities</a> among Black, Indigenous, and Latinx populations. This confluence has brought overdue attention to racism in environmentalism, as evidenced by the Audubon Society's recent <a href="http://audubon.org/magazine/fall-2020/revealing-past-create-future" target="_blank">reckoning</a> with racial injustices in its past and present, including <a href="https://www.audubon.org/news/the-myth-john-james-audubon" target="_blank">publicizing</a> that its famed founder was a White supremacist and a slaveholder. The intersections of <a href="https://www.yesmagazine.org/opinion/2020/09/23/election-black-voters-climate/" target="_blank">climate justice and racial justice</a> have also come to the fore through <a href="https://www.nytimes.com/2020/10/05/climate/heat-minority-school-performance.html" target="_blank">studies of how Black communities are greatly harmed by hotter temperatures</a> and through the popular <a href="https://www.intersectionalenvironmentalist.com/" target="_blank">intersectional environmentalist</a> platform created by Leah Thomas, a young Black activist and "<a href="https://www.greengirlleah.com/about-1" target="_blank">eco-communicator</a>." To these reckonings we need to add the racism and xenophobia that have long characterized environmentally motivated population controls.</p><p>The New York Times recently exposed these sins in <a href="https://www.nytimes.com/2019/08/14/us/anti-immigration-cordelia-scaife-may.html/" target="_blank">a profile of Cordelia Scaife May</a>, showing how this heir to the Mellon fortune converted a love of birding into a network of anti-immigration, pro-population-control organizations that still influence politics today. In the 1960s May linked threatened birdlife to the rapidly expanding human population. May wasn't wrong to see and worry over this link: A host of human activities—from <a href="https://www.smithsonianmag.com/science-nature/popular-pesticides-linked-drops-bird-population-180951971/" target="_blank" rel="noopener noreferrer">toxic agriculture and industry</a> to <a href="https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.0050157" target="_blank" rel="noopener noreferrer">sprawling settlements</a> and <a href="https://www.npr.org/2017/10/05/555949789/light-pollution-can-impact-noctural-bird-migration" target="_blank" rel="noopener noreferrer">light</a> and <a href="https://www.mnn.com/earth-matters/animals/blogs/birds-live-near-human-noise-sing-louder-shorter-songs" target="_blank" rel="noopener noreferrer">noise pollution</a>—decimate avian habitats and habits. May's anti-immigration approach, however, indicates how readily environmentalism can mutate into racist and xenophobic actions.</p><p>The Times investigators show that "protecting natural habitats and helping women prevent unplanned pregnancies merged over time into a single goal of preserving the environment by discouraging offspring altogether." Taken on its own, this goal resonates with Conceivable Future's and population engineers' aims. To be clear, this does not mean that today's child-free climate advocates are racist nativists. However, it does indicate how readily the affiliation arises because of the ugly history of forced population control.</p>
Contemporary Examples<p>And this history is hardly past. For example, race and class conflicts erupted around a population platform within the Sierra Club only 15 years ago. In 2004, a faction of club members took a page from May and argued that more people living in the U.S. meant more encroachment on less developed land and water. As with May's effort, this anti-immigration push amounted to "the greening of hate," according to the Southern Poverty Law Center and Anti-Defamation League, who entered the dispute when they found White supremacists lobbying for anti-immigration Sierra Club board candidates. A 2010 <a href="https://www.splcenter.org/20100630/greenwash-nativists-environmentalism-and-hypocrisy-hate" target="_blank">SPLC report</a> firms up the connection between environmentalist intentions and racist agendas by explaining why White nationalist John Tanton infiltrated the club: "Using an organization perceived by the public as part of the liberal left would insulate nativists from charges of racism—charges that … would likely otherwise stick."</p><p>Charges of racism ultimately did stick to Tanton and his anti-immigration, pro-population-control allies. And they continue to stick in analyses of the child-free for climate movement today. Earlier this year, climate journalist Meehan Crist <a href="https://www.lrb.co.uk/the-paper/v42/n05/meehan-crist/is-it-ok-to-have-a-child" target="_blank">took up</a> AOC's question of whether it's OK to have a child. In arriving at an answer (for her, yes), she affiliates child-free positions with "anti-feminist, racist and anti-human" values and with bad science. "Darker visions" proceed from this analysis, she writes, visions of those who believe "racial purity will save the planet. Closed borders. . . . Ecofascist death squads." The dark visions Crist spins from the child-free for climate question underscore how readily calls for reproductive limits touch the third rails of modern environmentalism: racism, eugenics, xenophobia, even death-dealing.</p><p>We get even closer to these third rails when we consider that the question of whether to reproduce is, for some people, no choice at all. Modern efforts to limit fertility, which ramped up after World War II, have targeted poor women in the Global South, and Black, Indigenous, and people of color in the U.S. using coercion and force. BIPOC reproductive justice advocates such as Loretta Ross have condemned dichotomous pro-abortion-rights versus anti-abortion politics for producing "<a href="https://www.google.com/books/edition/Radical_Reproductive_Justice/hN-4DgAAQBAJ?hl=en&gbpv=1&dq=loretta%20ross%20radical%20reproductive&pg=PT8&printsec=frontcover&bsq=anemic" target="_blank" rel="noopener noreferrer">anemic political analyses</a>" that ignore the reality of forced sterilizations in prisons and the appallingly high maternal mortality rate for Black women in the U.S. These are all forms of what medical historian and ethicist Harriet Washington calls "<a href="https://www.youtube.com/watch?v=J8WCS1Rs8K8" target="_blank" rel="noopener noreferrer">medical apartheid</a>."</p>
- 7 Billion People Crowding Out Imperiled Animals and Plants ... ›
- David Attenborough: 'Population Growth Must Come to an End ... ›
- For Many Reporters Covering Climate, Population Remains the ... ›
By Sharon Guynup
At this time of year, in Russia's far north Laptev Sea, the sun hovers near the horizon during the day, generating little warmth, as the region heads towards months of polar night. By late September or early October, the sea's shallow waters should be a vast, frozen expanse.
Comparison of autumn sea ice formation for the first half of October 2012 (the record year for Arctic sea ice extent loss) and in 2020 (second place for sea ice extent loss). The satellite record goes back to 1979. @Icy_Samuel, data provided by NSIDC
Arctic sea ice extent on Oct. 25, 2020 was at a record low 5.613 million square kilometers for this date, surpassing the record set in 2019 of 6.174 million square kilometers. ChArctic NSIDC
The Arctic appears to be changing into an entirely new climate state due to rapid warming. The extent of sea ice in the late summer, when it reaches its minimum each year, has already entered a statistically different climate, with surface air temperatures and the number of days with rain instead of snow also beginning to transition. Simmi Sinha, ©UCAR
A polar bear prowls the Arctic shoreline. VisualHunt.com
A fire burning through northern forest in Krasnoyarsk, Siberia, in July 2020. Greenpeace International
- Atmospheric Carbon Dioxide Levels Are at Their Highest in 23 ... ›
- Russia Unveils Plan to 'Use the Advantages' of Climate Change ... ›
- Arctic Sea Ice Melting by 2035 Is Possible, Study Finds ›
By Peter A. Kloess
Picture Antarctica today and what comes to mind? Large ice floes bobbing in the Southern Ocean? Maybe a remote outpost populated with scientists from around the world? Or perhaps colonies of penguins puttering amid vast open tracts of snow?
Giants of the Sky<p>As their name suggests, these ancient birds had sharp, bony spikes protruding from sawlike jaws. Resembling teeth, these spikes would have helped them catch squid or fish. We also studied another remarkable feature of the pelagornithids – their imposing size.</p><p>The largest flying bird alive today is the <a href="https://www.nationalgeographic.com/animals/birds/group/albatrosses/" target="_blank">wandering albatross</a>, which has a wingspan that reaches 11 ½ feet. The Antarctic pelagornithids fossils we studied have a wingspan nearly double that – about 21 feet across. If you tipped a two-story building on its side, that's about 20 feet.</p><p>Across Earth's history, very few groups of vertebrates have achieved powered flight – and only two reached truly giant sizes: birds and a group of <a href="https://www.amnh.org/exhibitions/pterosaurs-flight-in-the-age-of-dinosaurs/what-is-a-pterosaur" target="_blank" rel="noopener noreferrer">reptiles called pterosaurs</a>.</p>
Full-size model of a Quetzalcoatlus on display at JuraPark in Baltow, Poland. Aneta Leszkiewicz / Wikimedia<p>Pterosaurs ruled the skies during the Mesozoic Era (252 million to 66 million years ago), the same period that dinosaurs roamed the planet, and they reached hard-to-believe dimensions. <a href="https://www.wired.com/2013/11/absurd-creature-of-the-week-quetz/" target="_blank" rel="noopener noreferrer">Quetzalcoatlus</a> stood 16 feet tall and had a colossal 33-foot wingspan.</p>
Birds Get Their Opportunity<p>Birds originated while dinosaurs and pterosaurs were still roaming the planet. But when an <a href="https://www.smithsonianmag.com/science-nature/dinosaur-killing-asteroid-impact-chicxulub-crater-timeline-destruction-180973075/" target="_blank">asteroid struck the Yucatan Peninsula 66 million years ago</a>, dinosaurs and pterosaurs both perished. Some <a href="https://www.audubon.org/news/how-birds-survived-asteroid-impact-wiped-out-dinosaurs" target="_blank">select birds survived</a>, though. These survivors diversified into the thousands of bird species alive today. Pelagornithids evolved in the period right after dinosaur and pterosaur extinction, when competition for food was lessened.</p><p><a href="https://doi.org/10.1002/spp2.1284" target="_blank">The earliest pelagornithid remains</a>, recovered from 62-million-year-old sediments in New Zealand, were about the size of modern gulls. The first giant pelagornithids, the ones in our study, <a href="https://doi.org/10.1038/s41598-020-75248-6" target="_blank" rel="noopener noreferrer">took flight over Antarctica about 10 million years later</a>, in a period called the Eocene Epoch (56 million to 33.9 million years ago). In addition to these specimens, fossilized remains from other pelagornithids have been found on every continent.</p><p>Pelagornithids lasted for about 60 million years before going extinct just before the Pleistocene Epoch (2.5 million to 11,700 years ago). No one knows exactly why, though, because few fossil records have been recovered from the period at the end of their reign. Some paleontologists cite <a href="https://doi.org/10.1080/02724634.2011.562268" target="_blank" rel="noopener noreferrer">climate change as a possible factor</a>.</p>
Piecing it Together<p>The fossils we studied are fragments of whole bones collected by paleontologists from the University of California at Riverside in the 1980s. In 2003, the specimens were transferred to Berkeley, where they now reside in the <a href="https://ucmp.berkeley.edu/" target="_blank" rel="noopener noreferrer">University of California Museum of Paleontology</a>.</p><p>There isn't enough material from Antarctica to rebuild an entire skeleton, but by comparing the fossil fragments with similar elements from more complete individuals, we were able to assess their size.</p>
In life, the pelagornithid would have had numerous 'teeth,' making it a formidable predator. Peter Kloess, CC BY-NC-SA
- Climate Change Threatens Two-Thirds of North American Bird ... ›
- 37% of North American Birds Face Extinction - EcoWatch ›
- Meet Five 'Extinct' Species That Have Returned to Life - EcoWatch ›
The world's largest financial institutions loaned more than $2.6 trillion in 2019 to sectors driving the climate crisis and wildlife destruction, according to a new report from advocacy organization portfolio.earth.
- Climate Crisis May Cause the Next Financial Crisis - EcoWatch ›
- World's Banks Have Given $2.7 Trillion to Fossil Fuels Since Paris ... ›
- World's Biggest Banks Are Driving Climate Change, Pumping ... ›