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Spiderweb silks and architectures reveal millions of years of evolutionary ingenuity

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theconversation.com – Ella Kellner, Ph.D. Student in Biological Sciences, University of North Carolina – Charlotte – 2025-08-13 07:36:00


Spiderwebs come in diverse architectures, each adapted to a spider’s environment and prey type. Originating about 400 million years ago, spider silk initially served to protect eggs and guide navigation. Different spiders build webs suited to their hunting style: orb webs catch flying insects with sticky spirals; cobwebs use tensioned lines as spring-loaded traps for crawling prey; funnel webs act as sensory mats alerting spiders to vibrations. Jumping spiders use silk as safety tethers for precise jumps. Spiders produce up to seven silk types with varied properties for frames, safety lines, or sticky glue. Webs showcase intricate design and evolution, highlighting spiders’ material innovation.

An orchard orb weaver spider rests in the center of her web.
Daniela Duncan/Moment via Getty Images

Ella Kellner, University of North Carolina – Charlotte

Have you ever walked face-first into a spiderweb while on a hike? Or swept away cobwebs in your garage?

You may recognize the orb web as the classic Halloween decoration or cobwebs as close neighbors with your dust bunnies. These are just two among the many types of spiderweb architectures, each with a unique structure specially attuned to the spider’s environment and the web’s intended job.

While many spiders use their webs to catch prey, they have also evolved unusual ways to use their silk, from wrapping their eggs to acting as safety lines that catch them when they fall.

As a materials scientist who studies spiders and their silks, I am curious about the relationship between spiderweb architecture and the strength of the silks spiders use. How do the design of a web and the properties of the silk used affect a spider’s ability to catch its next meal?

Webs’ ancient origins

Spider silk has a long evolutionary history. Researchers believe that it first evolved around 400 million years ago. These ancestral spiders used silk to line their burrows, protect their vulnerable eggs and create sensory paths and guidelines as they navigated their environment.

To understand what ancient spiderwebs could have looked like, scientists look to the lampshade spider. This spider lives in rock outcroppings in the Appalachian and Rocky mountains. It is a living relative of some of the most ancient spiders to ever make webs, and it hasn’t changed much at all since web-building first evolved.

A black and brown spider camouflaged over a mossy rock, with a circular, flat web around it, stuck to the rock
A lampshade spider in its distinctive web between rocks.
Tyler Brown, CC BY-SA

Aptly named for its web shape, the lampshade spider makes a web with a narrow base that widens outward. These webs fill the cracks between rocks where the spider can be camouflaged against the rough surface. It’s hard for a prospective meal to traverse this rugged landscape without being ensnared.

Web diversity

Today, all spider species produce silk. Each species creates its own specific web architecture that is uniquely suited to the type of prey it eats and the environment it lives in.

Take the orb web, for example. These are aerial, two-dimensional webs featuring a distinctive spiral. They mostly catch flying or jumping prey, such as flies and grasshoppers. Orb webs are found in open areas, such as on treelines, in tall grasses or between your tomato plants.

Image of a black spider spinning an an irregular web
A black widow spider builds three-dimensional cobwebs.
Karen Sloane-Williams/500Px Plus via Getty Images

Compare that to the cobweb, a structure that is most often seen by the baseboards in your home. While the term cobweb is commonly used to refer to any dusty, abandoned spiderweb, it is actually a specific web shape typically designed by spiders in the family Theridiidae. This spiderweb has a complex, three-dimensional architecture. Lines of silk extend downwards from the 3D tangle and are held affixed to the ground under high tension. These lines act as a sticky, spring-loaded booby trap to capture crawling prey such as ants and beetles. When an insect makes contact with the glue at the base of the line, the silk detaches from the ground, sometimes with enough force to lift the meal into the air.

Watch a redback spider build the high-tension lines of a cobweb and ensnare unsuspecting ants.

Web weirdos

Imagine you are an unsuspecting beetle, navigating your way between strands of grass when you come upon a tightly woven silken floor. As you begin to walk across the mat, you see eight eyes peeking out of a silken funnel – just before you’re quickly snatched up as a meal.

Spiders such as funnel-web weavers construct thick silk mats on the ground that they use as an extension of their sensory systems. The spider waits patiently in its funnel-shaped retreat. Prey that come in contact with the web create vibrations that alert the spider a tasty treat is walking across the welcome mat and it’s time to pounce.

A light-brown spider facing the camera, with a funnel shaped web surrounding it
A funnel-web spider peeks out of its web in the ground.
sandra standbridge/Moment via Getty Images

Jumping spiders are another unusual web spinner. They are well known for their varied colorations, elaborate courtship dances and being some of the most charismatic arachnids. Their cuteness has made them popular, thanks to Lucas the Spider, an adorable cartoon jumping spider animated by Joshua Slice. With two huge front eyes giving them depth perception, these spiders are fantastic hunters, capable of jumping in any direction to navigate their environment and hunt.

But what happens when they misjudge a jump, or worse, need to escape a predator? Jumpers use their silk as a safety tether to anchor themselves to surfaces before leaping through the air. If the jump goes wrong, they can climb back up their tether, allowing them to try again. Not only does this safety line of silk give them a chance for a redo, it also helps with making the jump. The tether helps them control the direction and speed of their jump in midair. By changing how fast they release the silk, they can land exactly where they want to.

A brown spider with green iridescence in mid-air, tethered to a leaf behind it with a thin strand of silk
A jumping spider uses a safety tether of silk as it makes a risky jump.
Fresnelwiki/Wikimedia Commons, CC BY-SA

To weave a web

All webs, from the orb web to the seemingly chaotic cobweb, are built through a series of basic, distinct steps.

Orb-weaving spiders usually start with a proto-web. Scientists think this initial construction is an exploratory stage, when the spider assesses the space available and finds anchor points for its silk. Once the spider is ready to build its main web, it will use the proto-web as a scaffold to create the frame, spokes and spiral that will help with absorbing energy and capturing prey. These structures are vital for ensuring that their next meal won’t rip right through the web, especially insects such as dragonflies that have an average cruising speed of 10 mph. When complete, the orb weaver will return to the center of the web to wait for its next meal.

The diversity in a spider’s web can’t all be achieved with one material. In fact, spiders can create up to seven types of silk, and orb weavers make them all. Each silk type has different material and mechanical properties, serving a specific use within the spider’s life. All spider silk is created in the silk glands, and each different type of silk is created by its own specialized gland.

A pale brown spider at the center of its spiral patterned  orb-web
A European garden spider builds a two-dimensional orb web.
Massimiliano Finzi/Moment via Getty Images

Orb weavers rely on the stiff nature of the strongest fibers in their arsenal for framing webs and as a safety line. Conversely, the capture spiral of the orb web is made with extremely stretchy silk. When a prey item gets caught in the spiral, the impact pulls on the silk lines. These fibers stretch to dissipate the energy to ensure the prey doesn’t just tear through the web.

Spider glue is a modified silk type with adhesive properties and the only part of the spiderweb that is actually sticky. This gluey silk, located on the capture spiral, helps make sure that the prey stays stuck in the web long enough for the spider to deliver a venomous bite.

To wrap up

Spiders and their webs are incredibly varied. Each spider species has adapted to live within its environmental niche and capture certain types of prey. Next time you see a spiderweb, take a moment to observe it rather than brushing it away or squishing the spider inside.

Notice the differences in web structure, and see whether you can spot the glue droplets. Look for the way that the spider is sitting in its web. Is it currently eating, or are there discarded remains of the insects it has prevented from wandering into your home?

Observing these arachnid architects can reveal a lot about design, architecture and innovation.The Conversation

Ella Kellner, Ph.D. Student in Biological Sciences, University of North Carolina – Charlotte

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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Note: The following A.I. based commentary is not part of the original article, reproduced above, but is offered in the hopes that it will promote greater media literacy and critical thinking, by making any potential bias more visible to the reader –Staff Editor.

Political Bias Rating: Centrist

This content is a factual, scientific overview of spider webs and spider silk, focusing on biology, evolution, and material science. It contains no political opinions or ideological viewpoints and does not engage in any partisan topics. Therefore, it can be considered politically neutral or centrist, as it purely aims to inform readers without any detectable bias.

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RFK Jr.’s plans to overhaul ‘vaccine court’ system would face legal and scientific challenges

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theconversation.com – Anna Kirkland, Professor of Women’s and Gender Studies, University of Michigan – 2025-08-15 07:39:00


The Vaccine Injury Compensation Program (VICP), established in 1986, provides a legal process for compensating individuals harmed by vaccines while protecting manufacturers from lawsuits. Health Secretary Robert F. Kennedy Jr. criticizes the system as biased and slow, proposing reforms or dismantling it. Experts acknowledge the program needs updates, such as increasing judges, adjusting damage caps, and expanding vaccine coverage. However, significant changes face legal and political challenges. Kennedy’s suggestion to add unproven injuries like autism to the list contradicts scientific consensus and may face lawsuits. Proposals to move claims to regular courts could hinder compensation efforts and threaten vaccine supply stability.

The Vaccine Injury Compensation Program was established in 1986 by an act of Congress.
MarsBars/iStock via Getty Images Plus

Anna Kirkland, University of Michigan

For almost 40 years, people who suspect they’ve been harmed by a vaccine have been able to turn to a little-known system called the Vaccine Injury Compensation Program – often simply called the vaccine court.

Health and Human Services Secretary Robert F. Kennedy Jr. has long been a critic of the vaccine court, calling it “biased” against compensating people, slow and unfair. He has said that he wants to “revolutionize” or “fix” this system.

I’m a scholar of law, health and medicine. I investigated the history, politics and debates about the Vaccine Injury Compensation Program in my book “Vaccine Court: The Law and Politics of Injury.”

Although vaccines are extensively tested and monitored, and are both overwhelmingly safe for the vast majority of people and extremely cost-effective, some people will experience a harmful reaction to a vaccine. The vaccine court establishes a way to figure out who those people are and to provide justice to them.

Having studied the vaccine court for 15 years, I agree that it could use some fixing. But changing it dramatically will be difficult and potentially damaging to public health.

Deciphering vaccine injuries

The Vaccine Injury Compensation Program is essentially a process that enables doctors, lawyers, patients, parents and government officials to determine who deserves compensation for a legitimate vaccine injury.

It was established in 1986 by an act of Congress to solve a specific social problem: possible vaccine injuries to children from the whole-cell pertussis vaccine. That vaccine, which was discontinued in the U.S. in the 1990s, could cause alarming side effects like prolonged crying and convulsions. Parents sued vaccine manufacturers, and some stopped producing vaccines.

Congress was worried that lawsuits would collapse the country’s vaccine supply, allowing diseases to make a comeback. The National Childhood Vaccine Injury Act of 1986 created the vaccine court process and shielded vaccine manufacturers from these lawsuits.

Here’s how it works: A person who feels they have experienced a vaccine-related injury files a claim to be heard by a legal official called a special master in the U.S. Court of Federal Claims. The Health and Human Services secretary is named as the defendant and is represented by Department of Justice attorneys.

A syringe leaning against a gavel on a white background
Many experts agree that the vaccine compensation program could use some updates.
t_kimura via iStock / Getty Images Plus

Doctors who work for HHS evaluate the medical records and make a recommendation about whether they think the vaccine caused the person’s medical problem. Some agreed-upon vaccine injuries are listed for automatic compensation, while other outcomes that are scientifically contested go through a hearing to determine if the vaccine caused the problem.

Awards come from a trust fund, built up through a 75-cent excise tax on each dose of covered vaccine sold. Petitioners’ attorneys who specialize in vaccine injury claims are paid by the trust fund, whether they win or lose.

Some updates are needed

Much has changed in the decades since Congress wrote the law, but Congress has not enacted updates to keep up.

For instance, the law supplies only eight special masters to hear all the cases, but the caseload has risen dramatically as more vaccines have been covered by the law. It set a damages cap of US$250,000 in 1986 but did not account for inflation. The statute of limitations for an injury is three years, but in my research, I found many people file too late and miss their chance.

When the law was written, it only covered vaccines recommended for children. In 2023, the program expanded to include vaccines for pregnant women. Vaccines just for adults, like shingles, are not covered. COVID-19 vaccine claims go to another system for emergency countermeasures vaccines that has been widely criticized. These vaccines could be added to the program, as lawyers who bring claims there have advocated.

These reform ideas are “friendly amendments” with bipartisan support. Kennedy has mentioned some of them, too.

A complex system is hard to revolutionize

Kennedy hasn’t publicly stated enough details about his plan for the vaccine court to reveal the changes he intends to make. The first and least disruptive course of action would be to ask Congress to pass the bipartisan reforms noted above.

But some of his comments suggest he may seek to dismantle it, not fix it. None of his options are straightforward, however, and consequences are hard to predict.

Robert F. Kennedy Jr., Secretary of the Department of Health and Human Services, testifying in Congress
HHS Secretary Robert Kennedy Jr. has said he plans to revolutionize the vaccine court.
Kayla Bartkowski / Staff, Getty Images News

Straight up changing the vaccine court’s structure would probably be the most difficult path. It requires Congress to amend the 1986 law that set it up and President Donald Trump to sign the legislation. Passing the bill to dismantle it requires the same process. Either direction involves all the difficulties of getting a contentious bill through Congress. Even the “friendly amendments” are hard – a 2021 bill to fix the vaccine court was introduced but failed to advance.

However, there are several less direct possibilities.

Adding autism to the injuries list

Kennedy has long supported discredited claims about harms from vaccines, but the vaccine court has been a bulwark against claims that lack mainstream scientific support. For example, the vaccine court held a yearslong court process from 2002 to 2010 and found that autism was not a vaccine injury. The autism trials drew on 50 expert reports, 939 medical articles and 28 experts testifying on the record. The special masters deciding the cases found that none of the causation hypotheses put forward to connect autism and vaccines were reliable as medical or scientific theories.

Much of Kennedy’s ire is directed at the special masters, who he claims “prioritize the solvency” of the system “over their duty to compensate victims.” But the special masters do not work for him. Rather, they are appointed by a majority of the judges in the Court of Federal Claims for four-year terms – and those judges themselves have 15-year terms. Kennedy cannot legally remove any of them in the middle of their service to install new judges who share his views.

Given that, he may seek to put conditions like autism on the list of presumed vaccine injuries, in effect overturning the special masters’ decisions. Revising the list of recognized injuries to add ones without medical evidence is within Kennedy’s powers, but it would still be difficult. It requires a long administrative process with feedback from an advisory committee and the public. Such revisions have historically been controversial, and are usually linked to major scientific reviews of their validity.

Public health and medical groups are already mobilized against Kennedy’s vaccine policy moves. If he failed to follow legally required procedures while adding new injuries to the list, he could be sued to stop the changes.

Targeting vaccine manufacturers

Kennedy could also lean on his newly reconstituted Advisory Committee on Immunization Practices to withdraw recommendations for certain vaccines, which would also remove them from eligibility in the vaccine compensation court. Lawsuits against manufacturers could then go straight to regular courts. On Aug. 14, 2025, the Department of Health and Human Services may have taken a step in this direction by announcing the revival of a childhood vaccine safety task force in response to a lawsuit by anti-vaccine activists.

Kennedy has also supported legislation that would allow claims currently heard in vaccine court to go to regular courts. These drastic reforms could essentially dismantle the vaccine court.

People claiming vaccine injuries could hope to win damages through personal injury lawsuits in the civil justice system instead of vaccine court, perhaps by convincing a jury or getting a settlement. These types of settlements were what prompted the creation of the vaccine court in the first place. But these lawsuits could be hard to win. There is a higher bar for scientific evidence in regular courts than in vaccine court, and plaintiffs would have to sue large corporations rather than file a government claim.

Raising the idea of reforming the vaccine court has provoked strong reactions across the many groups with a stake in the program. It is a complex system with multiple constituents, and Kennedy’s approaches so far pull in different directions. The push to revolutionize it will test the strength of its complex design, but the vaccine court may yet hold up.The Conversation

Anna Kirkland, Professor of Women’s and Gender Studies, University of Michigan

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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The post RFK Jr.’s plans to overhaul ‘vaccine court’ system would face legal and scientific challenges appeared first on theconversation.com



Note: The following A.I. based commentary is not part of the original article, reproduced above, but is offered in the hopes that it will promote greater media literacy and critical thinking, by making any potential bias more visible to the reader –Staff Editor.

Political Bias Rating: Center-Left

The content presents a fact-based, nuanced analysis of the Vaccine Injury Compensation Program and Robert F. Kennedy Jr.’s criticisms and proposed reforms. It acknowledges the safety and effectiveness of vaccines, aligns with mainstream scientific consensus, and highlights bipartisan efforts for reform. While it critiques Kennedy’s more controversial positions, especially regarding discredited vaccine-autism links, it does so with measured language and provides context on legal and public health complexities. Overall, the article leans slightly left by supporting established science and public health perspectives but remains balanced and informative without strong partisan rhetoric.

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Genomics can help insect farmers avoid pitfalls of domestication

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theconversation.com – Christine Picard, Professor of Biology, Indiana University – 2025-08-14 07:29:00


Insect farming is gaining popularity for animal feed, pet food, and human consumption, but domestication poses challenges. Lessons from traditional domestication—selective breeding for desirable traits—apply to insects like silkworms and honeybees, which have become dependent on humans. New insect species such as black soldier flies and mealworms offer sustainable protein by recycling organic waste. However, domestication often reduces genetic diversity and immune strength, increasing vulnerability to diseases, as seen in factory-farmed chickens and monoculture crops like bananas. Modern genomics and gene-editing tools can help monitor and maintain genetic health, preventing collapse and supporting sustainable insect agriculture.

A biologist maintains a large population of black soldier flies for protein farming.
picture alliance/Contributer via Getty Images

Christine Picard, Indiana University and Hector Rosche-Flores, Indiana University

Insects are becoming increasingly popular to grow on farms as feed for other animals, pet food and potentially as food for people. The process of bringing a wild animal into an artificial environment, known as domestication, comes with unique challenges. Luckily, there are important lessons to be learned from all the other animals people have domesticated over millennia.

As researchers who study how domesticating animals changes their genes, we believe that recognizing the vulnerabilities that come with domestication is important. Today’s powerful biotechnology tools can help researchers anticipate and head off issues early on.

Domestication is nothing new

From grain domestication starting as far back as 12,000 years ago to today’s high-tech, genome-based breeding strategies, humans have long bent nature to suit their purposes. By selectively breeding individual plants or animals that have desirable traits – be it appearance, size or behavior – humans have domesticated a whole host of species.

The same principle underlies all domestication attempts, from dogs to crops. A breeder identifies an individual with a desired trait – whether that’s a dog’s talent for tracking or a plant’s ability to withstand pests. Then they breed it to confirm that the desired trait can be passed down to offspring. If it works, the breeder can grow lots of descendants in a lineage with the genomic advantage.

People have made crops resilient to disease and environmental challenges, docile cows that yield more milk or meat, large-breasted poultry and cute dogs.

A long history of insects working for people

Insect domestication is also far from new. People have reared silkworms (Bombyx mori) to produce silk for over 5,000 years. But selective breeding and isolation from wild relatives have led to their inability to fly, dependence on one food source and need for assistance to reproduce. As a result, silkworms are wholly reliant on humans for survival, and the original species doesn’t exist anymore.

A white moth sitting on a white cocoon on top of a leaf
Silk moths have lost their ability to fly and are completely dependent on humans for survival.
baobao ou/Moment Open via Getty Images

Similarly, people have maintained colonies of the western honeybee (Apis mellifera) for pollination and honey production for centuries. But bees are at risk due to colony collapse disorder, a phenomenon where worker bees disappear from seemingly healthy hives. The causes of colony collapse disorder are unknown; researchers are investigating disease and pesticides as possible factors.

Now the insect agriculture industry has set its sights on domesticating some other insects as a source of sustainably farmed protein for other animals or people.

Insects such as the black soldier fly (Hermetia illucens) and the mealworm (Tenebrio molitor) can grow on existing organic waste streams. Rearing them on organic farm and food waste circularizes the agricultural system and reduces the environmental footprint of growing proteins.

But these insects will need to be grown at scale. Modern agriculture relies on monocultures of species that allow for uniformity in size and synchronized growth and harvest. Domesticating wild insects will be necessary to turn them into farmed animals.

A large number of white larvae in a dry food medium
Black soldier fly larvae feed on a mixture of wheat bran, corn and alfalfa when reared in labs and farms.
Christine Picard

Domestication has an immunity downside

Chickens today grow faster and bigger than ever. But factory-farmed animals are genetically very homogeneous. Moreover, people take care of everything for these domesticated animals. They have easy access to food and are given antibiotics and vaccines for their health and safety.

Consequently, industrially-farmed chickens have lost a lot of their immune abilities. Building these strong disease-fighting proteins requires a lot of energy. Since their spotless, controlled environments protect them, those immune genes are just not needed. The energy their bodies would typically use to protect themselves can instead be used to grow bigger.

In the wild, individuals with faulty immune genes would likely be killed by pathogens, quickly wiping these bad genes out from the population. But in a domesticated environment, such individuals can survive and pass on potentially terrible genes.

The H5N1 bird flu provides a recent example of what can go wrong when a homogeneous population of domesticated animals encounters a dangerous pathogen. When disease broke out, the poor immune systems of domesticated chickens cracked under the pressure. The disease can spread quickly through large facilities, and eventually all chickens there must be euthanized.

Hundreds of brown chickens with red crowns being reared in an indoor facility
Industrially-farmed chickens are genetically homogenous and have lost much of their immune defenses.
pidjoe/E+ via Getty Images

Domestication and the risks of monoculture

Weak immune systems aren’t the only reason the bird flu spread like it did.

Domestication often involves growing large numbers of a single species in small concentrated areas, referred to as a monoculture. All the individuals in a monoculture are roughly the same, both physically and in their genes, so they all have the same susceptibilities.

Banana cultivars are one example. Banana plants grown in the early 1900s were all descendants of a single clone, named Gros Michel. But when the deadly Panama disease fungus swept through, the plants had no defenses and the cultivar was decimated.

Banana growers turned to the Cavendish variety, grown in the largest banana farms today. The banana industry remains vulnerable to the same kind of risk that took down Gros Michel. A new fungal strain is on the rise, and scientists are rushing to head off a global Cavendish banana collapse.

Lessons about weaknesses that come with domestication are important to the relatively new industry advancing insects as the future of sustainable protein production and organic waste recycling.

How genomics can help correct course

Modern genomics can give insect agriculture a new approach to quality control. Technological tools can help researchers learn how an organism’s genes relate to its physical traits. With this knowledge, scientists can help organisms undergoing domestication bypass potential downsides of the process.

For instance, scientists combined data from hundreds of different domesticated tomato genomes, as well as their wild counterparts. They discovered something you’ve probably experienced – while selecting for longer shelf life, tomato flavor genes were unintentionally bred out.

A similar approach of screening genomes has allowed scientists to discover the combination of genes that enhances milk production in dairy cows. Farmers can intentionally breed individuals with the right combinations of milk-producing genes while keeping an eye on what other genes the animals have or lack. This process ensures that breeders don’t lose valuable traits, such as robust immune systems or high fertility rates, while selecting for economically valuable traits during domestication.

Insect breeders can take advantage of these genetic tools from the outset. Tracking an animal population’s genetic markers is like monitoring patients’ vital signs in the hospital. Insect breeders can look at genes to assess colony health and the need for interventions. With regular genetic monitoring of the farmed population, if they begin to see individuals with markers for some “bad” genes, they can intervene right away, instead of waiting for a disaster.

Mechanisms to remedy an emerging disaster include bringing in a new brood from the wild or another colony whose genes can refresh the domesticated population’s inbred and homogeneous genome. Additionally, researchers could use gene-editing techniques such as CRISPR-Cas9 to replicate healthy and productive combinations of genes in a whole new generation of domesticated insects.

Genomics-assisted breeding is a supplement to standard practices and not a replacement. It can help breeders see which traits are at risk, which ones are evolving, and where natural reservoirs of genetic diversity might be found. It allows breeders to make more informed decisions, identify genetic problems and be proactive rather than reactive.

By harnessing the power of genomics, the insect agriculture industry can avoid setting itself up for an accidental future collapse while continuing to make inroads on sustainable protein production and circularizing the agricultural ecosystem.The Conversation

Christine Picard, Professor of Biology, Indiana University and Hector Rosche-Flores, Ph.D. Student in Biology, Indiana University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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Note: The following A.I. based commentary is not part of the original article, reproduced above, but is offered in the hopes that it will promote greater media literacy and critical thinking, by making any potential bias more visible to the reader –Staff Editor.

Political Bias Rating: Centrist

The content presents a factual, science-based discussion on insect domestication and sustainable agricultural practices without promoting a specific political agenda. It focuses on the benefits and risks of domestication and biotechnology, highlighting both challenges and technological solutions in a balanced manner. The article underscores environmental sustainability and advances in genomics while maintaining an objective tone, characteristic of centrist perspectives that weigh multiple facets pragmatically.

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COVID-19 vaccines for kids are mired in uncertainty amid conflicting federal guidance

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theconversation.com – David Higgins, Assistant Professor of Pediatrics, University of Colorado Anschutz Medical Campus – 2025-08-13 07:38:00


As parents prepare for the school year, many face confusion about whether to vaccinate their children with updated COVID-19 shots amid rising cases. Traditionally, vaccine guidance was clear and coordinated, involving federal agencies and advisory committees. However, since Robert F. Kennedy Jr. became Health and Human Services Secretary in 2025, this process has become chaotic, with changes made behind closed doors and contradictory recommendations about vaccinating healthy children. Public messaging is confusing, insurance coverage uncertain, and vaccine availability limited. Parents are advised to consult pediatricians for informed decisions and focus on other essential vaccinations and preventive measures to keep kids healthy during this unsettled period.

The coordinated process for recommending and ensuring access to vaccines has been disrupted.
Thomas Barwick/DigitalVision via Getty Images

David Higgins, University of Colorado Anschutz Medical Campus

It’s August, and parents and caregivers are frantically preparing their kids for a new school year by buying supplies, filling out forms and meeting teachers. This year, many parents also face a question that’s more complicated than usual: Should my child get an updated COVID-19 vaccine, and will I even have that choice? For some, that decision may have already been made by chaotic federal policy, just as COVID-19 cases are rising nationwide.

As a pediatrician and researcher who studies vaccine delivery and health policy, I am hearing uncertainty from both parents and health care providers. If that describes you, you are not alone. A poll published Aug. 1, 2025, by the health policy organization KFF found half of parents are unsure whether federal health agencies are recommending COVID-19 vaccines for healthy children this fall.

The process that normally provides clear, consistent recommendations and ensures availability for vaccines before respiratory virus season has been upended, and this year’s COVID-19 vaccine guidance for children is a prime example.

How the process typically works

For over two decades, there was a predictable, well-coordinated process to ensure recommended seasonal vaccines, such as the flu shot, were available for anyone who wanted them by early fall. In recent years, COVID-19 vaccines have been incorporated into this same annual cycle.

Beginning in February, the Food and Drug Administration, including its independent committee of experts, reviewed data and approved the optimal formulation. After FDA approval, the Advisory Committee on Immunization Practices, or ACIP, an independent panel of experts that advises the Centers for Disease Control and Prevention, reviewed the evidence in public meetings and issued clear recommendations.

The U.S. has long followed an established set of steps lining up vaccines for any given year.

Manufacturers then scaled up production; insurers confirmed coverage, which is tied to the advisory committee’s recommendations; and doses were distributed nationwide so vaccines would be available in clinics and pharmacies before the leaves started turning. This usual series of steps ensured that guidance incorporated input from scientists, epidemiologists, public health experts, clinicians, manufacturers, insurers and consumers. It also fostered trust among health care providers and, in turn, provided parents with clarity and confidence when making decisions.

What’s different this year

Since Robert F. Kennedy Jr. took over as secretary of Health and Human Services in February 2025, that usual, tightly choreographed dance has become a chaotic scramble marked by uncertainty and a lack of transparency. Decisions about vaccine guidance have been made through internal channels without the same level of public discussion, review of the evidence or broad stakeholder input.

In May 2025, Kennedy and FDA leadership bypassed the agency’s independent review committee and announced that some COVID-19 vaccines would be approved only for children with high-risk conditions. One formulation has yet to be FDA-approved for children at all. The secretary first announced updated recommendations for children on X, stating COVID-19 vaccines would no longer be recommended for healthy children. Shortly after, the CDC posted guidelines that differed from that announcement and said healthy children “may” receive them. Meanwhile, the Advisory Committee on Immunization Practices was disbanded by Kennedy and replaced with a smaller, hand-picked panel that operates with less transparency and has yet to weigh in on COVID-19 vaccines for children.

Public messaging has added to the confusion. Statements from newly appointed federal health leaders have questioned the safety of COVID-19 vaccines and the long-standing processes for ensuring their safety. Funding for mRNA technology, which supports several COVID-19 vaccines and is being explored for use against other diseases and even some cancers, has been cut. And many of the claims used to justify these actions have been challenged by experts as inaccurate or misleading.

What this means for parents

For parents, the result is uncertainty about whether their children should be vaccinated, when and where the vaccines will be available, whether insurance will cover them, or whether their choice has effectively been made for them by newly appointed health leaders operating outside the guardrails of the normal vetting process. This uncertainty comes at a time when the uptake of COVID-19 vaccines in children is already lower than that of other routine vaccines.

A health care provider holds a tray with a syringe and talks to a young girl at a clinic
Public messaging around which vaccines are available and recommended is especially confusing this year.
Heather Hazzan, SELF Magazine

Currently, CDC guidelines say healthy children six months and older “may” receive a COVID-19 vaccine based on shared decision-making with their health care provider. The CDC recommends that children who are moderately or severely immunocompromised receive it. These guidelines differ from FDA approvals and Kennedy’s guidelines announced on X, and they have not been reviewed or voted on in an advisory committee on immunization practices meeting.

Parents can start by talking with their child’s pediatrician about benefits and potential risks, confirming eligibility and checking on insurance coverage. Pediatricians welcome parents’ questions and work tirelessly to provide answers grounded in the best available evidence so families can make truly informed decisions about their child’s health.

In some cases, unfortunately, even if parents want the vaccine and their pediatrician agrees, they may not be able to get it due to any number of factors, including local supply shortages, lack of insurance coverage, policies that prevent administration by pharmacists and other health providers without clear federal guidance, or an unwillingness of providers to give it “off-label,” meaning in a way that differs from the FDA’s official approval. For those parents, their decision has been made for them.

Reducing risks in other ways

Whether or not a child receives an updated COVID-19 vaccine, parents can still take steps to reduce illness, including keeping children home when sick, teaching them cough-and-sneeze hygiene and encouraging frequent hand-washing. The CDC provides national and state data on seasonal respiratory illnesses, including COVID-19, while local public health websites often offer community-level information.

Parents should also remember that the COVID-19 vaccine is not the only thing to consider before school starts. Routine immunizations such as those for measles, mumps and rubella, known as the MMR vaccine; diphtheria, tetanus and pertussis, called DTaP; and influenza are essential for keeping kids healthy and in school. These are widely available for now. This is particularly important, as this year the United States has experienced the highest number of measles cases in decades.

Uncertainty surrounding COVID-19 vaccine recommendations, and potentially other vaccines, may worsen in the coming weeks and months. It is possible parents will continue to see shifting guidance, conflicting statements from federal agencies and reduced access to vaccines in their communities.

In this chaotic environment, parents can look to trusted sources such as their pediatrician or organizations such as the American Academy of Pediatrics, which will continue to provide independent, evidence-based vaccine guidance.The Conversation

David Higgins, Assistant Professor of Pediatrics, University of Colorado Anschutz Medical Campus

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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The post COVID-19 vaccines for kids are mired in uncertainty amid conflicting federal guidance appeared first on theconversation.com



Note: The following A.I. based commentary is not part of the original article, reproduced above, but is offered in the hopes that it will promote greater media literacy and critical thinking, by making any potential bias more visible to the reader –Staff Editor.

Political Bias Rating: Center-Left

The content presents a critical view of recent changes in federal health policy under Robert F. Kennedy Jr.’s leadership, emphasizing concerns about transparency, scientific integrity, and public health impacts. It supports established vaccine processes and expert consensus, reflecting a trust in mainstream public health institutions and evidence-based medicine. While it critiques a specific administration’s approach, it does so from a perspective that values scientific expertise and public health, aligning it with a center-left viewpoint rather than a partisan or extreme stance.

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