Editor’s note: Humans have lived in balance with nature for millions of years. It was only in the last ten thousand years, with the advent of civilization, that humans have become unbalanced. If we continue on this course, we will reach our destination in less than a hundred years.
Discoveries in the fields of human origins, paleoanthropology, cognitive science, and behavioral biology have accelerated in the past few decades. We occasionally bump into news reports that new findings have revolutionary implications for how humanity lives today—but the information for the most part is still packed obscurely in the worlds of science and academia.
Some experts have tried to make the work more accessible, but Deborah Barsky’s new book, Human Prehistory: Exploring the Past to Understand the Future (Cambridge University Press, 2022), is one of the most authoritative yet. The breadth and synthesis of the work are impressive, and Barsky’s highly original analysis on the subject—from the beginnings of culture to how humanity began to be alienated from the natural world—keeps the reader engaged throughout.
Long before Jane Goodall began telling the world we would do well to study our evolutionary origins and genetic cousins, it was a well-established philosophical creed that things go better for humanity the more we try to know ourselves.
Barsky, a researcher at the Catalan Institute of Human Paleoecology and Social Evolution and associate professor at the Open University of Catalonia (UOC) and Rovira i Virgili University in Tarragona, Spain, who came to this field through her decades of studying ancient stone tool technologies, writes early in her book that lessons learned from the remote past could guide our species toward a brighter future, but “that so much of the information that is amassed by prehistoric archeologists remains inaccessible to many people” and “appears far removed from our daily lives.” I reached out to Barsky in the early stage of her book launch to learn more.
Jan Ritch-Frel: What would you suggest a person consider as they hold a 450,000-year-old handaxe for the first time?
Deborah Barsky: I think everyone feels a deep-seated reverence when touching or holding such an ancient tool. Handaxes in particular carry so many powerful implications, including on the symbolic level. You have to imagine that these tear-shaped tools—the ultimate symbol of the Acheulian—appeared in Africa some 1.75 million years ago and that our ancestors continued creating and re-creating this same shape from that point onwards for more than a million and a half years!
These tools are the first ones recognized as having been made in accordance with a planned mental image. And they have an aesthetic quality, in that they present both bilateral and bifacial symmetry. Some handaxes were made in precious or even visually pleasing rock matrices and were shaped with great care and dexterity according to techniques developed in the longest-enduring cultural norm known to humankind.
And yet, in spite of so many years of studying handaxes, we still understand little about what they were used for, how they were used, and, perhaps most importantly, whether or not they carry with them some kind of symbolic significance that escapes us. There is no doubt that the human capacity to communicate through symbolism has been hugely transformative for our species.
Today we live in a world totally dependent on shared symbolic thought processes, where such constructs as national identity, monetary value, religion, and tradition, for example, have become essential to our survival. Complex educational systems have been created to initiate our children into mastering these constructed realities, integrating them as fully as possible into this system to favor their survival within the masses of our globalized world. In the handaxe we can see the first manifestations of this adaptive choice: to invest in developing symbolic thought. That choice has led us into the digital revolution that contemporary society is now undergoing. Yet, where all of this will lead us remains uncertain.
JRF: Your book shows that it is more helpful to us if we consider the human story and evolution as less of a straight line and more so as one that branches in different ways across time and geography. How can we explain the past to ourselves in a clear and useful way to understand the present?
DB: One of the first things I tell my students is that in the field of human prehistory, one must grow accustomed to information that is in a constant state of flux, as it changes in pace with new discoveries that are being made on nearly a daily basis.
It is also important to recognize that the pieces composing the puzzle of the human story are fragmentary, so that information is constantly changing as we fill in the gaps and ameliorate our capacity to interpret it. Although we favor scientific interpretations in all cases, we cannot escape the fact that our ideas are shaped by our own historical context—a situation that has impeded correct explanations of the archeological record in the past.
One example of this is our knowledge of the human family that has grown exponentially in the last quarter of a century thanks to new discoveries being made throughout the world. Our own genus, Homo, for example, now includes at least five new species, discovered only in this interim.
Meanwhile, genetic studies are taking major steps in advancing the ways we study ancient humans, helping to establish reliable reconstructions of the (now very bushy) family tree, and concretizing the fact that over millions of years multiple hominin species shared the same territories. This situation continued up until the later Paleolithic, when our own species interacted and even reproduced together with other hominins, as in the case of our encounters with the Neandertals in Eurasia, for example.
While there is much conjecture about this situation, we actually know little about the nature of these encounters: whether they were peaceful or violent; whether different hominins transmitted their technological know-how, shared territorial resources together, or decimated one another, perhaps engendering the first warlike behaviors.
One thing is sure: Homo sapiens remains the last representative of this long line of hominin ancestors and now demonstrates unprecedented planetary domination. Is this a Darwinian success story? Or is it a one-way ticket to the sixth extinction event—the first to be caused by humans—as we move into the Anthropocene Epoch?
In my book, I try to communicate this knowledge to readers so that they can better understand how past events have shaped not only our physical beings but also our inner worlds and the symbolic worlds we share with each other. It is only if we can understand when and how these important events took place—actually identify the tendencies and put them into perspective for what they truly are—that we will finally be the masters of our own destiny. Then we will be able to make choices on the levels that really count—not only for ourselves but also for all life on the planet. Our technologies have undoubtedly alienated us from these realities, and it may be our destiny to continue to pursue life on digital and globalized levels. We can’t undo the present, but we can most certainly use this accumulated knowledge and technological capacity to create far more sustainable and “humane” lifeways.
JRF: How did you come to believe that stone toolmaking was the culprit for how we became alienated from the world we live in?
DB: My PhD research at Perpignan University in France was on the lithic assemblages from the Caune de l’Arago cave site in southern France, a site with numerous Acheulian habitation floors that have been dated to between 690,000 and 90,000 years ago. During the course of my doctoral research, I was given the exceptional opportunity to work on some older African and Eurasian sites. I began to actively collaborate in international and multidisciplinary teamwork (in the field and in the laboratory) and to study some of the oldest stone toolkits known to humankind in different areas of the world. This experience was an important turning point for me that subsequently shaped my career as I oriented my research more and more toward understanding these “first technologies.”
More recently, as a researcher at the Catalan Institute of Human Paleoecology and Social Evolution (IPHES-CERCA) in Tarragona, Spain, I continue to investigate the emergence of ancient human culture, in particular through the study of a number of major archeological sites attributed to the so-called “Oldowan” technocomplex (after the eponymous Olduvai Gorge Bed I sites in Tanzania). My teaching experience at the Open University of Catalonia (UOC) and Rovira i Virgili University (Tarragona) helped me to articulate my findings through discussions and to further my research with students and colleagues.
Such ancient tool kits, some of which date to more than 2 million years ago, were made by the hands of hominins who were very different from ourselves, in a world that was very distinct from our own. They provide a window of opportunity through which to observe some of the cognitive processes employed by the early humans who made and used them. As I expanded my research, I discovered the surprising complexity of ancient stone toolmaking, eventually concluding that it was at the root of a major behavioral bifurcation that would utterly alter the evolutionary pathways taken by humankind.
Early hominins recognizing the advantages provided by toolmaking made the unconscious choice to invest more heavily in it, even as they gained time for more inventiveness. Oldowan tool kits are poorly standardized and contain large pounding implements, alongside small sharp-edged flakes that were certainly useful, among other things, for obtaining viscera and meat resources from animals that were scavenged as hominins competed with other large carnivores present in the paleolandscapes in which they lived. As hominins began to expand their technological know-how, successful resourcing of such protein-rich food was ideal for feeding the developing and energy-expensive brain.
Meanwhile, increased leisure time fueled human inventiveness, and stone tool production—and its associated behaviors—grew ever more complex, eventually requiring relatively heavy investments into teaching these technologies to enable them to pass onwards into each successive generation. This, in turn, established the foundations for the highly beneficial process of cumulative learning that was later coupled with symbolic thought processes such as language that would ultimately favor our capacity for exponential development. This also had huge implications, for example, in terms of the first inklings of what we call “tradition”—ways to make and do things—that are indeed the very building blocks of culture. In addition, neuroscientific experiments undertaken to study the brain synapses involved during toolmaking processes show that at least some basic forms of language were likely needed in order to communicate the technologies required to manufacture the more complex tools of the Acheulian (for example, handaxes).
Moreover, researchers have demonstrated that the areas of the brain activated during toolmaking are the same as those employed during abstract thought processes, including language and volumetric planning. I think that it is clear from this that the Oldowan can be seen as the start of a process that would eventually lead to the massive technosocial database that humanity now embraces and that continues to expand ever further in each successive generation, in a spiral of exponential technological and social creativity.
JRF: Did something indicate to you at the outset of your career that archeology and the study of human origins have a vital message for humanity now? You describe a conceptual process in yourbook whereby through studying our past, humanity can learn to “build up more viable and durable structural entities and behaviors in harmony with the environment and innocuous to other life forms.”
DB: I think most people who pursue a career in archeology do so because they feel passionate about exploring the human story in a tangible, scientific way. The first step, described in the introductory chapters of my book, is choosing from an ever-widening array of disciplines that contribute to the field today. From the onset, I was fascinated by the emergence and subsequent transformation of early technologies into culture. The first 3 million years of the human archeological record are almost exclusively represented by stone tools. These stone artifacts are complemented by other kinds of tools—especially in the later periods of the Paleolithic when bone, antler, and ivory artifacts were common—alongside art and relatively clear habitational structures.
It is one thing to analyze a given set of stone tools made by long-extinct hominin cousins and quite another to ask what their transposed significance to contemporary society might be.
As I began to explore these questions more profoundly, numerous concrete applications did finally come to the fore, thus underpinning how data obtained from the prehistoric register is applicable when considering issues such as racism, climate change, and social inequality that plague the modern globalized world.
In my opinion, the invention and subsequent development of technology was the inflection point from which humanity was to diverge towards an alternative pathway from all other life forms on Earth. We now hold the responsibility to wield this power in ways that will be beneficial and sustainable to all life.
Editor’s note: It’s a coast – not a beach, we forget that when our society talks about going to the beach. A beach is for basking in the sun, getting a drink, and dabbling in the water. But a coast is far more than an entertainment place for humans, it’s a habitat for a variety of animals and plants. Sand mining is a threat to these ecosystems and criminals operate it illegally. Construction companies need sand for their concrete as the demand for buildings soars. They seal the planet by destroying coastlines – and beaches.
While beaches are being stolen in poor places, they are being nourished(replenished) in wealthy places. Beach nourishment is the process of placing additional sediment on a beach or in the nearshore. A wider and higher beach can provide storm protection for coastal structures. Sediment is commonly dredged offshore and pumped directly onto the beach, dumped nearshore by a hopper dredge, or occasionally sourced from an inland location. It is an exercise in futility that destroys natural ecosystems and subsidizes wealthy beachfront homeowners at taxpayers’ expense, particularly as worsening storms resulting from climate change demand investment in more permanent solutions to beach erosion. The sea level will rise and people living there will have to move.
It is time to stop building infrastructure and trying to control nature.
Increasing demand for this seemingly abundant and common material harms human and natural communities — and fuels a lucrative and dangerous illegal industry.
Coastal ecosystems — including oyster reefs, sandy beaches, mangrove forests and seagrass beds — provide important habitat for marine life and food and recreation for people. They also protect shorelines from waves and storms. But these precious systems face serious threats. This article looks at what put them at risk, along with examples of efforts to restore and protect important coastal ecosystems around the world.
We need to talk about sand
Most people don’t realize that these humble grains — that ubiquitous stuff of vacations, ant farms and hourglasses — are the second-most used natural resource in the world after water. According to a 2019 report from the United Nations Environment Programme, we use more than 55 billion tons of it per year — nearly 40 pounds per person per day.
And a lot of that sand comes from illegal activity, involving criminal gangs who mine, smuggle, and kill for the precious material.
The Building Blocks of Modern Society
Sand — legal or otherwise — gets used to enhance beaches, extract petroleum through hydraulic fracking, fill land under buildings, and make computer chips.
But the biggest amount by far — an estimated 85% of the sand mined globally — goes into making concrete. Concrete combines two key ingredients: cement, a binding agent made from calcium or other substances, and aggregate, which is either sand or a combination of sand and gravel. Quality concrete requires jagged and angular aggregate grains — a quality found in only a tiny fraction of the worlds’ sand, most of it on beaches and in rivers. This sand also is easy and cheap to mine, and it’s located close to much of the construction taking place around the world.
According to the United Nations Environment Programme, world consumption of aggregate for all uses exceeds 40 billion metric tons (44 billion U.S. tons) a year — an estimate that’s likely on the conservative side and represents about twice the amount of sediment carried annually by all the world’s rivers. (Sediment from land rocks is the source of most coastal sand, which also comes from shells and marine organisms pulverized by waves, the digestive tracts of coral-eating fish, and the remains of tiny creatures called foraminifera.)
The organization also warns about sand mining’s serious consequences for humans and the natural environment.
Removing beach sand leaves coastal structures more vulnerable to erosion even as climate change raises sea levels and makes storms more intense. Transporting sand generates carbon dioxide emissions. Sand mining has political and cultural consequences, including effects on the tourism industry, and creates noise and air pollution.
Coastal sand mining also destroys complex ecosystems. The microorganisms, crabs, and clams that live in beach sand are important food sources for birds. Sea turtles and several bird species nest on sandy beaches. Seagrass, an important food source and habitat for marine residents, needs sandy ocean floor to grow. Stretches of underwater sand provide habitat for sea stars, sea cucumbers, conchs, and other critters, and are feeding grounds for flounder, rays, fish, and sharks.
Yet this harm is not the only issue. Increasing demand for sand has created a vast illegal industry resembling the organized criminal drug trade, including the same violence, black markets, and piles of money — an estimated $200 to $350 billion a year. Of all the sand extracted globally every year, only about 15 billion metric tons are legally traded, according to a report from the Global Initiative Against Transnational Organized Crime.
Pascal Pedruzzi, director of UNEP’s Global Resource Information Database-Geneva, became aware of illegal sand mining when the Jamaican government asked UNEP in 2014 to find out why the island had a serious beach erosion problem.
“There was a lot we didn’t know about sand extraction, including how much was being taken,” he says.
Or from how many places: Sand is mined from coastal environments in at least 80 countries on six continents, according to the 2022 book Vanishing Sands, written by several geologists and other experts on coastal management and land rights.
The book outlines a litany of sand crimes, from seemingly small to massive. In Sardinia, Italy, airport officials have seized about 10 tons of sand over 10 years, much of it carried in thousands of individual half-quart bottles. In Morocco, criminals removed as many as 200 dump trucks of sand a day from massive dunes lining the Atlantic coast.
According to Africa’s Institute for Security Studies, illegal sand mining in Morocco is run by a syndicate second in size only to the country’s drug mafia. It involves corrupt government and law enforcement officials and foreign companies. Much of the Moroccan sand, for example, ends up in buildings in Spain.
In India demand for sand tripled from 2000 to 2017, creating a market worth 150 billion rupees, just over $2 billion. Multiple diverse and competing “sand mafias” run mining sites surrounded by armed private security guards. Their weapons likely are obtained illegally, given the difficult process of acquiring guns legally in India.
The NGO South Asia Network on Dams, Rivers and People reports hundreds of deaths and injuries related to illegal sand mining in India each year, including citizens (adults and children), journalists, activists, government officials, and law enforcement.
There are similar stories in Bangladesh, Cambodia, elsewhere in Africa, and in the Caribbean — almost everywhere sandy coastal areas can be found.
How to Solve the Problem
UNEP has begun tackling the problem of sand mining, putting forth ten recommendations that include creating international standards for extracting sand from the marine environment, reducing the use of sand by using substitutes, and recycling products made with sand.
While these recommendations target legal sand mining, more responsible management and reduced overall demand also should make illegal mining less lucrative and, therefore, less common.
“The good news is there’s a long list of solutions,” says Peduzzi. “We start by stopping the waste of sand. We can make the life of buildings longer, by retrofitting them instead of knocking them down. Maybe change the use of a building over time, as a school first and then 50 years later, a place for elderly people. When a building needs to be destroyed, crush and reuse the concrete. Build with wood, bricks, adobe, and straw.”
Building with straw also could reduce burning of crop waste. Every year, India produces 500 million tons of straw but burns 140 million tons as “excess.” One company there, Strawcture Eco, is using straw to create wall and ceiling panels that are fire resistant, insulating, and sustainable.
Alternatives to sand in concrete include ash from waste incineration and aluminum smelting waste. Peduzzi notes that ash creates concrete that is about 10% less solid, but points out, “that is still pretty good. You can use it to make buildings, but maybe not a bridge.”
The UNEP report notes that involvement from industry, the private sector, and civil society is vital in solving the problem. For example, shifting away from building with concrete will require changing the way architects and engineers are trained, acceptance by building owners, and new laws and regulations.
“We rely on sand, as a commodity,” Peduzzi says. “But we also need to realize its ecosystem services. We must be wiser about how we use it.”
UNEP hopes to collect solutions into a single, accessible online location (although it currently lacks funding for the effort). The idea is to create a hub for policies and technological solutions, Peduzzi says, and to develop best practices for them. The Global Initiative report on India also calls for a website for tracking illegal sand mining hosted by a think-tank or journalism agency — a sort of crime-spotters portal where people could anonymously upload evidence.
Shifting Sands, Shifting Thinking
William Neal, an emeritus professor at Grand Valley State University in Michigan and one of the authors of Vanishing Sands, suggests in an email that finding sand substitutes is not enough. Coastal communities, he says, need to retreat from rising seas rather than build more hard structures such as seawalls. This “shoreline engineering” often destroys the very beaches it is intended to save, he explains, and the long-term cost of saving property through engineering often ends up exceeding the value of the property. Seawalls also tend to simply shift water elsewhere, potentially causing flooding and significant damage along other parts of the shoreline.
Peduzzi also espouses shifts in thinking, including how we get around in cities.
“Instead of building roads for cars, build subways,” he says. “That moves people faster and gets away from fossil fuels. The icing on the cake is that when digging subway tunnels, you are getting rocks, generating this material instead of using it. Cars are not sustainable — not the material to make a car itself or the roads and parking lots.”
Without systemic changes, the problem of sand removal is only going to grow bigger as the population increases and people continue to migrate from rural to urban areas, increasing the demand for infrastructure like roads and buildings.
“The problem has been overlooked,” Peduzzi warns. “People need to realize that sand is just another story of how dependent we are on natural resources for development.”
Melissa Gaskill is a freelance science writer based in Austin, Texas, whose work has appeared in Scientific American, Mental Floss, Newsweek, Alert Diver and many other publications. She is the co-author of A Worldwide Travel Guide to Sea Turtles and author of Pandas to Penguins: Ethical Encounters with Animals at Risk.
“The geoengineering approach puts Earth’s systems at risk in a faulty and false bid toward solving the climate crisis. It is what we call a false solution,” said one campaigner.
Biodiversity advocates on Wednesday called on the U.S. Environmental Protection Agency to reject a new geoengineering project spearheaded by researchers in Massachusetts that one critic said would do “nothing to solve the root causes of the climate crisis and instead puts at risk the oceans’ natural capacity to absorb carbon and their role in sustaining life on Earth.”
Friends of the Earth (FOE) and other groups warned that an experiment called LOC-NESS by the Woods Hole Oceanographic Institution (WHOI) carries “potentially catastrophic risks” for the Atlantic Ocean, where researchers have proposed dumping more than 60,000 gallons of sodium hydroxide near Cape Cod to test a “carbon dioxide removal approach” called Ocean Alkalinity Enhancement (OAE).
WHOI’s website states that the experiment would involve the release of “nontoxic, fluorescent Rhodamine WT dye into the ocean from a research ship,” with researchers tracking the dye’s movement over 72 hours in order to determine whether the ocean’s alkalinity could be enhanced.
If so, the scientists say, they could ultimately help to regulate atmospheric carbon.
The EPA’s notice about the proposed study from last month, however, says that the project “would involve a controlled release of a sodium hydroxide solution”—which is “essentially lye, a substance known to cause chemical burns and one that must be handled with great care,” according to Tom Goldtooth, co-founder and member of the board of directors of the national Climate Justice Alliance.
“It’s astonishing that the EPA is even considering allowing dangerous, caustic chemicals to be dumped in ocean waters that are frequented by at least eight endangered species, including right whales and leatherback turtles.”
“Altering the chemical composition of the ocean under the guise of increasing its capacity to absorb carbon dioxide is misleading and dangerous,” said Goldtooth. “An experiment centered on introducing this caustic substance into the sea should not be permitted… The geoengineering approach puts Earth’s systems at risk in a faulty and false bid toward solving the climate crisis. It is what we call a false solution.”
Friends of the Earth pointed out that WHOI’s permit application to the EPA acknowledges that after changing the ocean’s alkalinity, the researchers “have no direct way of measuring how much carbon dioxide will be removed by the experiment.”
“The production of alkaline materials is extremely energy-intensive, releasing similar or even higher levels of greenhouse gasses than they remove upon being dumped into the ocean,” said the group. “The researchers have declined to analyze how much carbon dioxide was released in the production, transportation, and dumping of the sodium hydroxide, making it impossible to know whether the technology even reduces greenhouse gas emissions.”
Despite these lingering questions, said FOE, the EPA has issued tentative approval for a permit for the experiment, with a public comment period open until July 1.
The caustic sodium hydroxide solution the researchers plan to use, warns FOE, “causes chemical burns upon contact with skin or marine animals, setting the stage for potentially extreme damage to local ecosystems.”
Benjamin Day, FOE’s senior campaigner for its Climate and Energy Justice Program, said the group “unequivocally” opposes the LOC-NESS geoengineering experiment in the fragile ecosystem off the coast of Cape Cod.
“It’s astonishing that the EPA is even considering allowing dangerous, caustic chemicals to be dumped in ocean waters that are frequented by at least eight endangered species, including right whales and leatherback turtles,” said Day.
Mary Church, geoengineering campaign manager for the Center for International Environmental Law, said “speculative technologies” like OAE are “a dangerous distraction from the real solutions to the climate crisis,” which scientists around the world agree requires a rapid reduction in planet-heating fossil fuel emissions through a large-scale shift to renewable energy sources.
“Marine geoengineering does nothing to solve the root causes of the climate crisis and instead puts at risk the oceans’ natural capacity to absorb carbon and their role in sustaining life on Earth,” said Church. “Outdoor experiments could not only cause immediate harm to marine life but are also a slippery slope to potentially catastrophic impacts of large-scale deployment.”
United Nations Convention on Biological Diversity has placed a moratorium on geoengineering techniques like OAE until there is “adequate scientific basis on which to justify such activities and appropriate consideration of the associated risks for the environment and biodiversity and associated social, economic, and cultural impacts.”
Editor’s note: Sharks are beautiful, intelligent creatures, but they have been overexploited for decades. Because of their “high market value” industrial fisheries hunt sharks for their fins and other body parts. But it’s difficult to control the protection of the sea predators when they move to unprotected zones or international and local fleets fish in other countries’ fishery zones. The brutal killings of adults, babies, and even pregnant sharks happen while our culture is focused on buying more stuff and attending distracting events.
If sharks went extinct, it would set off a chain reaction. Sharks play an important role in the food chain. Smaller animals like shellfish may go extinct if there were no sharks to eat seals, for example. That would create a ripple effect, causing mass die-offs of otters, seals, and many types of fish due to food scarcity. The chain reaction would continue until its effects were felt on land, with fisheries collapsing in a matter of years. When will humanity wake up and start living with – not against other precious beings?
Every year on July 14th, we celebrate Shark Awareness Day. It is not just a tribute to one of nature’s most misunderstood creatures; it is a call to action. Sharks have cruised the oceans for over 450 million years, playing a vital role in keeping marine ecosystems healthy. But today, these apex predators find themselves under increasing pressure, with many species teetering on the brink of extinction.
Sharks: More Than Just Jaws
Hollywood might portray sharks as mindless killing machines, but this couldn’t be further from the truth. Sharks come in a staggering variety of shapes and sizes, from the filter-feeding giants like the whale shark to the sleek and speedy blue shark. They possess incredible senses, like electroreception, that allows them to detect electrical fields emitted by prey, and an amazing ability to navigate vast distances.
As apex predators, they help maintain the balance by regulating the populations of species below them in the food chain. This includes controlling the numbers of mid-level predators and helping to ensure species diversity among smaller fish and invertebrate populations. Their feeding habits help keep marine ecosystems healthy and functional. For instance, by preying on weak or sick individuals, sharks help prevent the spread of disease and ensure a healthier gene pool within the prey population. Their disappearance could have devastating consequences, leading to population explosions of prey species and ultimately, the collapse of entire ecosystems.
A Cause for Alarm: Why Are Sharks Endangered?
Despite their importance, many shark species are alarmingly close to extinction. According to the International Union for Conservation of Nature (IUCN), over one-third or 30% of shark species are either vulnerable, endangered or critically endangered. Some of the most threatened species include the Great Hammerhead, the Oceanic whitetip, and the Basking shark.
The main culprit behind this is overfishing. Driven by demand for shark fins (a prized ingredient in shark fin soup) and meat, millions of sharks are caught every year, often through unsustainable practices like finning, where fins are removed and the body discarded.
Another major threat is habitat loss. Sharks rely on healthy coral reefs and mangroves for breeding and feeding. However, these vital ecosystems are being degraded by pollution, climate change, and coastal development.
A Ray of Hope: Conservation Efforts Underway
The silver lining in the story of sharks is the growing awareness and effort towards their conservation. Governments, NGOs, and international bodies are working together to protect these magnificent creatures:
Protected Areas: Many marine protected areas (MPAs) have been established to provide safe havens for sharks where fishing is restricted or banned. One notable example of a Marine Protected Area (MPA) that provides a safe haven for sharks is the Chagos Marine Reserve in the Indian Ocean. This reserve is one of the world’s largest marine protected areas and encompasses a variety of marine environments. It offers significant protection to various shark species, among other marine life, by enforcing strict regulations that limit fishing and other extractive activities.
Another example is the Jardines de la Reina National Park in Cuba, which has been particularly successful in conserving shark populations. This MPA provides a refuge for several species of sharks and has implemented strict no-take policies and eco-tourism guidelines that help maintain the health and biodiversity of its waters.
Deadly Predators
Deadly predators, Under the sea and on land But, what’s more deadly? A razor sharp, swimming shark Or the end of marine life?
Poem by @saf_begum
Regulations and Bans on Shark Finning: Shark finning, the brutal practice of removing a shark’s fins and discarding the rest of the body, has prompted global action through stringent regulations and international cooperation. Many countries now enforce laws that require sharks to be landed with fins naturally attached, enhancing sustainable practices and compliance. Furthermore, international agreements like CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) play a critical role in regulating the trade of endangered shark species to ensure their survival. These efforts are crucial in curbing unsustainable exploitation, promoting marine conservation, and supporting the recovery of shark populations worldwide.
Sustainable Fishing Practices: Minimizing bycatch, the accidental capture of non-target species in fisheries, is crucial for preserving marine biodiversity, including sharks. Sustainable practices such as gear modification, implementing time and area closures, and employing bycatch reduction devices can significantly reduce unintended catches. Regulations that require fisheries to use circle hooks and turtle excluder devices (TEDs) help prevent the capture of non-target species like sharks and turtles. Additionally, real-time management of fisheries based on immediate data and promoting consumer awareness through eco-labeling, as mandated by organizations like the Marine Stewardship Council (MSC), can drive demand towards sustainably harvested seafood. These strategies not only help conserve marine species but also enhance the overall health of marine ecosystems and support the economic stability of fishing-dependent communities.
This Shark Awareness Day, let’s not only admire the majestic Great Whites and the elusive deep-sea dwellers but also ignite a global commitment to safeguard their future. Every shark species plays a pivotal role in marine ecosystems, balancing marine life and ensuring the health of our oceans.
Today, we must transcend admiration and take decisive action. Let’s pledge to protect these magnificent creatures, understanding that saving sharks is fundamentally about preserving the entire marine ecosystem. By protecting sharks, we are not just saving individual species; we are investing in the health and sustainability of our entire ocean. Join us in this crucial mission—educate, advocate, and participate. Together, we can turn the tide for sharks and secure a vibrant future for our blue planet.
BioDB
BioDB is a new, non-profit website that serves as a dynamic hub for wildlife conservation enthusiasts while advocating for protecting our planet’s invaluable biodiversity. With a primary goal of raising awareness and mobilizing funds for selected non-governmental organizations (NGOs) dedicated to wildlife conservation, BioDB offers a comprehensive platform for individuals and organizations passionate about positively impacting our natural world. https://biodb.com/
Editor’s note: The author asks if that is a good thing. The short answer is no. For the same reason, agriculture is bad for the land, aquaculture is bad for the ocean. It is because humans have overcaught wild fish and depleted their numbers that people have more and more gone to aquaculture. There are now just too many human mouths to feed and not enough fish in the oceans.
Both aquaculture and fisheries have environmental and climate impacts — and they overlap more than you’d think
A new report from the United Nations’ Food and Agriculture Organization, or FAO, has found that more fish were farmed worldwide in 2022 than harvested from the wild, an apparent first.
Last week, the FAO released its annual report on the state of aquaculture — which refers to the farming of both seafood and aquatic plants — and fisheries around the world. The organization found that global production from both aquaculture and fisheries reached a new high — 223.3 million metric tons of animals and plants — in 2022. Of that, 185.4 million metric tons were aquatic animals, and 37.8 million metric tons were algae. Aquaculture was responsible for 51 percent of aquatic animal production in 2022, or 94.4 metric tons.
The milestone was in many ways an expected one, given the world’s insatiable appetite for seafood. Since 1961, consumption of seafood has grown at twice the annual rate of the global population, according to the FAO. Because production levels from fisheries are not expected to change significantly in the future, meeting the growing global demand for seafood almost certainly necessitates an increase in aquaculture.
Though fishery production levels fluctuate from year to year, “it’s not like there’s new fisheries out there waiting to be discovered,” said Dave Martin, program director for Sustainable Fisheries Partnerships, an international organization that works to reduce the environmental impact of seafood supply chains. “So any growth in consumption of seafood is going to come from aquaculture.”
A worker removes a stack of oyster baskets during harvest. Bloomberg Creative / Getty Images via Grist
But the rise of aquaculture underscores the need to transform seafood systems to minimize their impact on the planet. Both aquaculture and fisheries — sometimes referred to as capture fisheries, as they involve the capture of wild seafood — come with significant environmental and climate considerations. What’s more, the two systems often depend on each other, making it difficult to isolate their climate impacts.
“There’s a lot of overlap between fisheries and aquaculture that the average consumer may not see,” said Dave Love, a research professor at the Center for a Livable Future at Johns Hopkins University.
Studies have shown that the best diet for the planet is one free of animal protein. Still, seafood generally has much lower greenhouse gas emissions than other forms of protein from land-based animals. And given many people’s unwillingness or inability to go vegan, the FAO recommends transforming, adapting, and expanding sustainable seafood production to feed the world’s growing population and improve food security.
But “there’s a lot of ways to do aquaculture well, and there’s a lot of ways to do it poorly,” said Martin. Aquaculture can result in nitrogen and phosphorus being released into the natural environment, damaging aquatic ecosystems. Farmed fish can also spread disease to wild populations, or escape from their confines and breed with other species, resulting in genetic pollution that can disrupt the fitness of a wild population. Martin points to the diesel fuel used to power equipment on certain fish farms as a major source of aquaculture’s environmental impact. According to an analysis from the climate solutions nonprofit Project Drawdown, swapping out fossil fuel-based generators on fish farms for renewable-powered hybrids would prevent 500 million to 780 million metric tons of carbon emissions by 2050.
Other areas for improvement will vary depending on the specific species being farmed. In 2012, a U.N. study found that mangrove forests — a major carbon sink — have suffered greatly due to the development of shrimp and fish farming. Today, industry stakeholders have been exploring how new approaches and techniques from shrimp farmers can help restore mangroves.
Meanwhile, wild fishing operations present their own environmental problems. For example, poorly managed fisheries can harvest fish more quickly than wild populations can breed, a phenomenon known as overfishing. Certain destructive wild fishing techniques also kill a lot of non-targeted species, known as bycatch, threatening marine biodiversity.
But the line between aquaculture and fish harvested from the wild isn’t as clear as it may seem. For example, pink salmon that are raised in hatcheries and then released into the wild to feed, mature, and ultimately be caught again are often marketed as “wild caught.” Lobsters, caught wild in Maine, are often fed bait by fisherman to help them put on weight. “It’s a wild fishery,” said Love — but the lobster fishermen’s practice of fattening up their catch shows how human intervention is present even in wild-caught operations.
On the flipside, in a majority of aquaculture systems, farmers provide their fish with feed. That feed sometimes includes fish meal, says Love, a powder that comes from two sources: seafood processing waste (think: fish guts and tails) and wild-caught fish.
All of this can result in a confusing landscape for climate- or environmentally-conscientious consumers who eat fish. But Love recommends a few ways in which consumers can navigate choice when shopping for seafood. Buying fresh fish locally helps shorten supply chains, which can lower the carbon impact of eating aquatic animals. “In our work, we’ve found that the big impact from transport is shipping fresh seafood internationally by air,” he said. Most farmed salmon, for example, sold in the U.S. is flown in.
From both a climate and a nutritional standpoint, smaller fish and sea vegetables are also both good options. “Mussels, clams, oysters, seaweed — they’re all loaded with macronutrients and minerals in different ways” compared to fin fish, said Love.
Burning wood to generate electricity — “biomass energy” — is increasingly being pursued as a renewable replacement for burning coal in nations like the U.K., Japan, and South Korea — even though its emissions aren’t carbon neutral in practice.
On this episode of the Mongabay Newscast, reporter Justin Catanoso speaks with Rachel Donald about the single largest emitter of CO2 in the U.K., biomass firm Drax, which is trying to open two wood pellet plants in the state of California.
Catanoso explains how years of investigation helped him uncover a complicated web of public relations messaging that obscures the fact that replanting trees after cutting them down and burning them is not in practice carbon neutral or renewable and severely harms global biodiversity and forests.
“When those trees get ripped out, that carbon gets released. And that comes before we process this wood and ship it … then we burn it and don’t count those emissions. This is just [an] imponderable policy,” he says on this episode.
Justin Catanoso is no stranger to wood pellet plants, as he lives near four of them in the U.S. state of North Carolina, where biomass giant Enviva has several facilities. While that company filed for Chapter 11 bankruptcy this year, it remains the single largest producer of wood pellets globally.
This firm is one of several (alongside Drax in the U.K.) seeking to expand its global stake in the shift to renewable energy — a category of energy generation that industry and regulators insist burning biomass belongs in. However, a recent analysis shows it’s not renewable and adds more carbon to the atmosphere than coal and gas. But due to complicated language in the Kyoto Protocol treaty that extended the 1992 United Nations Framework Convention on Climate Change, several nations and the European Union still allow the burning of wood pellets to be counted as such, and thus made eligible for subsidies, too. This is a tremendous problem for global efforts to slow the biodiversity and climate crises, Catanoso says.
“In my area of North Carolina, which is the mid-Atlantic, we will have the climate of northern Florida in about 15 years. That’s how fast our climate is changing here,” Catanoso says. “It’s upon us, and we are not pulling the levers fast enough. To slow this down and cutting down trees, calling it carbon neutral … that’s just one of those loopholes that is just completely man-made.”
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Rachel Donald is a climate corruption reporter and the creator of Planet: Critical, the podcast and newsletter for a world in crisis. Her latest thoughts can be found at 𝕏 via @CrisisReports and at Bluesky via @racheldonald.bsky.social.
Mike DiGirolamo is a host & associate producer for Mongabay based in Sydney. He co-hosts and edits the Mongabay Newscast. Find him on LinkedIn, Bluesky and Instagram.
