Soccer is definitely a second-tier sport in the United States—after the ones we invented (baseball, football, and basketball). And, according to a recent New York TImes Magazine cover story, it’s not just how we regard the sport that’s different from the rest of the world—it’s also the way we develop and educate players.

We’ve talked a lot on this blog about whether college is indeed for everyone. The Times piece, which profiles the training of young Dutch soccer phenoms by the well known club Ajax, argues that its our national obsession with college (and collegiate athletics) that might be partially responsible for holding our national team back in this and subsequent World Cups:


No other nation has as comprehensive a college-sports system as exists here, and none assume that an elite athlete will seek (or benefit from) higher education. “You have a major problem in the ages of 17 to 21,” Huw Jennings, now the director of the youth academy at Fulham, in the English Premier League, told me when I visited him in London. “The N.C.A.A. system is the fault line. I understand that it is good for a person’s development to go to university, but it’s not the way the world develops players.”

There are other differences that author Michael Sokolove cites, which also contribute: Our stress of winning, focus on the team over the individual, over-performing that leads to injuries, playing in rec leagues (rather than soccer academies) as children, etc. It’s hard to argue against education—and soccer is not as secure a career track as vocational professions—but there’s always time for promising players to go back to school if their footie dreams don’t pan out. (An accompanying slideshow features 11 promising players in the U.S. system, at least five of which did some college time.)

Our basketball players have access to AAU-type systems that often allow them to develop their individual games, travel the country, and play against the top competition in the country. (They only go to college because the NBA requires them to for at least one year.)

If we want to be as competitive in soccer, why not set up something similar?

Photo via

  • Can’t stop endlessly scrolling? Tips to help you take back control
    Photo credit: milorad kravic/Getty Images
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    Can’t stop endlessly scrolling? Tips to help you take back control

    Social media is designed to be addictive, but there are ways to break free.

    It’s called the infinite scroll – a design feature on social media, shopping, video and many other apps that continuously loads content as you reach the bottom of the page. Handy? Yes. Clever? Also yes. Devious? Very much so. The infinite scroll is likely the main reason you find it so hard to stop scrolling once you begin.

    To understand why this design feature is so devious, we need to understand the psychology and behaviours it taps into.

    First, the infinite scroll takes away a natural stopping point – where you might decide that’s enough social media for today. For example, Instagram feeds once stopped after all chronologically new posts from followed accounts had been viewed, and even told us we were “all caught up” for the day. Now, algorithmic feeds combined with the infinite scroll mean there’s no way to ever be caught up with it all.

    The second reason you find it so hard to stop scrolling is the promise of something good that might be just about to pop up in your feed. The algorithm “knows” what you like. So, hand-in-hand with the infinite scroll, it keeps feeding you all those tasty tid-bits.

    Putting it bluntly, these features help create an addiction of sorts. The promise of a little hit of dopamine when we see content we love. And addictions are hard to beat – but not impossible.

    Here are some quick wins and longer-term solutions if you want to break free from the grip of the scroll.

    The quick wins

    Create a break

    Your device might be the problem, but it can also be part of the solution. Start by using your phone’s screen time features – such as Android’s Digital Wellbeing or Apple’s Screen Time.

    You can also install a more sophisticated third-party app that forces you to break the patterns of mindless scrolling behaviour.

    Apps such as One SecScreenZenOpal and Freedom can short-circuit the automatic habits associated with scrolling in various ways. These include putting mandatory pauses before social media apps open, or applying colour filters (like grayscale) to make apps less appealing.

    They can even hard-block apps for specific periods of time if you really need a tough love approach.

    Remove social media apps

    This one’s usually met with an audible gasp when I suggest it, but you might find you adapt to not having social media at your fingertips faster than you’d imagine. You’re not deleting your accounts – just making it harder to open them and scroll.

    Schedule some scrolling time

    If you can’t imagine life without scrolling, schedule time each day for just that activity. It could be in your lunch break or when you get home from work: give yourself the freedom to scroll for the amount of time you set (say, 15 minutes) and don’t feel guilty about it. Just remember you still have to close the apps and get on with your life as soon as the time is up.

    The hard work

    The above might limit your scrolling in the short term, but long-term benefits (and emotional freedom) will likely take a bit more work.

    The “easy” tips often work for a little while, when you’re motivated to change and feeling optimistic. But time and the pressures of life can start to erode your convictions.

    So, to gain true freedom from scrolling, think about social media and whether it’s a relationship that serves you well. If you feel like it’s controlling you far more than you are controlling it, here are some things to consider. Be warned, they might not be easy.

    What’s the deeper reason?

    Think deeply about why you’re scrolling so much in the first place. Is it a lack of willpower? Are you avoiding something or someone? Are you suppressing feelings that you would prefer not to acknowledge?

    All of these things can be reasons why we seek distraction. You might be avoiding a big thing (the state of a relationship) or a small thing (cooking dinner), but either way, scrolling is the symptom, not the disease. So, consider if scrolling might be part of a bigger problem you need to deal with instead.

    Who’s benefiting whom?

    Consider how much you really “need” social media. Do you actively use it in a way that benefits you (for example, as a business platform) or did you sign up out of curiosity years ago and have never really questioned why you’re still using it?

    If it’s the latter, apply a critical lens to the platforms you use and how they serve you. On average, Australians use six to seven different social media platforms regularly. Think about what you might gain from spending less time scrolling, but also think about whether your life would be worse without some of them.

    If you can’t think of a really compelling reason as to why it would be worse, it might be time to say goodbye to a few.

    These “hard” options will take time and effort, and require you to reflect on your habits. But, like with most things, the reward for effort is likely to be greater, and last longer.

    This article originally appeared on The Conversation. You can read it here.

  • How dolphins communicate – new discoveries from a long‑term study in Sarasota, Florida
    Bottlenose dolphins are social creatures that use whistles and clicks to communicate with each other.Photo credit: Brookfield Zoo Chicago’s Sarasota Dolphin Research Program, taken under NMFS MMPA Scientific Research Permit

    Human fascination with bottlenose dolphins goes back thousands of years, at least as early as Greek mythology.

    But it wasn’t until the 1960s that methodical research into dolphin communication began. Scientists like John Lilly and the husband-and-wife team of Melba and David Caldwell tried various experiments to decipher the sounds dolphins can make.

    The Caldwells figured out a way to record isolated animals in human care. They discovered that each individual dolphin communicated mostly with one unique whistle, which they called the “signature whistle.” Researchers now know that these whistles convey identities much like human names do. Dolphins use them to stay in touch with each other in their murky habitat, where vision is limited. It’s like announcing “I’m over here!” when someone can’t see you.

    This discovery is foundational to my own research. I’ve been studying communication in wild dolphins since the mid-1980s, when I joined my mentor Peter Tyack in documenting signature whistles in wild dolphins for the first time. Our team’s research focused on a resident community of free-ranging bottlenose dolphins in waters near Sarasota, Florida, where I continue to work today.

    This collaborative study, led by Randall Wells of Brookfield Zoo Chicago’s Sarasota Dolphin Research Program, involves numerous researchers from a variety of institutions, who study different aspects of dolphin biology, health, ecology and behavior. Begun in 1970, this is the longest-running research project on a population of wild cetaceans – whales, dolphins and porpoises – in the world.

    Each dolphin has distinctive markings on its dorsal fin. Experienced researchers can sometimes identify them by sight in the field, and they photograph them to confirm their identity in the lab.
    Each dolphin has distinctive markings on its dorsal fin. Experienced researchers can sometimes identify them by sight in the field, and they photograph them to confirm their identity in the lab.Photo credit: Photo by Brookfield Zoo Chicago’s Sarasota Dolphin Research Program, taken under NMFS MMPA Scientific Research Permit

    Recording and observing

    Researchers know the age, sex and maternal relatedness of almost all of the approximately 170 dolphins in the Sarasota community. This depth of knowledge provides an unprecedented opportunity to study communication in a wild cetacean species.

    The dolphins in the Sarasota project are periodically subject to brief catch-and-release health assessments, during which researchers, including me, briefly handle individual dolphins.

    Our team attaches suction-cup hydrophones directly onto each dolphin’s melon – that is, its forehead. We then record the dolphins continuously throughout the health assessments, taking notes on who is being recorded when, and what is happening at the time.

    This is how my colleagues and I were able to confirm that wild dolphins, like captive animals, produced large numbers of individually distinctive signature whistles when briefly isolated from other dolphins. Through observations and recordings of known free-swimming dolphins, we were further able to confirm that they produced these same signature whistles in undisturbed contexts.

    We have organized these recordings into the Sarasota Dolphin Whistle Database, which now contains nearly 1,000 recording sessions of 324 individual dolphins. More than half of the dolphins in the database have been recorded more than once.

    We identify each dolphin’s signature whistle based on its prevalence: In the catch-and-release context, about 85% of the whistles that dolphins produced are signature whistles. We can identify these visually, by viewing plots of frequency vs. time called spectrograms.

    Spectrograms of signature whistles of 269 individual bottlenose dolphins recorded in Sarasota. Figure created by Frants Jensen, with sound files from Laela Sayigh
    Spectrograms of signature whistles of 269 individual bottlenose dolphins recorded in Sarasota. Figure created by Frants Jensen, with sound files from Laela Sayigh

    Signature whistles and ‘motherese’

    The Sarasota Dolphin Whistle Database has proved to be a rich resource for understanding dolphin communication. For instance, we have discovered that some calves develop signature whistles similar to those of their mothers, but many do not, raising questions about what factors influence signature whistle development.

    We have also found that once developed, signature whistles are highly stable over an animal’s lifetime, especially for females. Males often form strong pair bonds with another adult male, and in some instances, their whistles become more similar to one another over time. We are still trying to understand when and why this occurs.

    Dolphin mothers modify their signature whistles when communicating with their calves by increasing the maximum frequency, or pitch. This is similar to human caregivers using a higher-pitched voice when communicating with young children – a phenomenon known as “motherese.”

    Also similar to humans is how dolphins will initiate contact with another dolphin by imitating their signature whistle – what we call a signature whistle copy. This is similar to how you would use someone’s name to call out to them.

    Our team is interested in finding out if dolphins also copy whistles of others who aren’t present, potentially talking about them. We have seen evidence of this in our recordings of dolphins during health assessments, which provide a rare context to document this phenomenon convincingly. But we still have more work to do to confirm that these are more than chance similarities in whistles.

    Shared whistle types

    Another exciting development has been our recent discovery of shared whistle types — ones that are used by multiple animals and that are not signature whistles. We call these non-signature whistles.

    I could hardly believe my ears when I first discovered a repeated, shared non-signature whistle type being produced by multiple dolphins in response to sounds we play back to them through an underwater speaker. We had previously believed that these non-signature whistles were somewhat random, but now I was hearing many different dolphins making a similar whistle type.

    Our team originally had been using the playbacks to try to determine whether dolphins use “voice cues” to recognize each other – similar to how you can recognize the voice of someone you know. Although we found that dolphins did not use voice cues, our discovery of shared non-signature whistle types has led to an entirely new research direction.

    The author listens to dolphin whistles on a boat in Sarasota. Jonathan Bird from the film 'Call of the Dolphins'/Oceanic Research Group, Inc.
    The author listens to dolphin whistles on a boat in Sarasota. Jonathan Bird from the film ‘Call of the Dolphins’/Oceanic Research Group, Inc.

    So far, I’ve identified at least 20 different shared non-signature whistle types, and I am continuing to build our catalog. We are hoping that artificial intelligence methods may help us categorize these whistle types in the future.

    To understand how these shared non-signature whistle types function, we are carrying out more playback experiments, filming the dolphins’ responses with drones. We’ve found that one such whistle often leads the dolphins to swim away, suggesting a possible alarm-type function. We have also found that another type might be an expression of surprise, as we have seen animals produce it when they hear unexpected stimuli.

    More difficult, more interesting

    So far, the main takeaway from our experiments has been that dolphin communication is complex and that there are not going to be one-size-fits-all responses to any non-signature whistle type. This isn’t surprising, given that, like us, these animals have complicated social relationships that could affect how they respond to different sound types.

    For instance, when you hear someone call your name, you may respond differently if you are with a group of people or alone, or if you recently had an argument with someone, or if you’re hungry and on your way to eat.

    Our team has a lot more work ahead to sample as many dolphins in as many contexts as possible, such as different ages, sexes, group compositions and activities.

    This makes my job more difficult – and far more interesting. I feel lucky every day I am able to spend working on the seemingly infinite number of fascinating research questions about dolphin communication that await answers.

    This article originally appeared on The Conversation. You can read it here.

  • Goodbye, knee pain. In a medical first, scientists have found a way to regrow damaged cartilage.
    (LEFT) Person with knee pain and (RIGHT) new bioactive material.Photo credit: Canva & Samuel I. Stupp/Northwestern University
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    Goodbye, knee pain. In a medical first, scientists have found a way to regrow damaged cartilage.

    “Our new therapy can induce repair in a tissue that does not naturally regenerate.”

    Science might be closer than ever to solving your aching knee problems. Researchers at Northwestern University have created a rubbery goo that can regrow cartilage in damaged knees.

    Cartilage cushions joints, keeps movement smooth and pain-free, and reduces pressure on bones—from standing still to a vigorous hike. However, when it’s damaged by injury or simple wear and tear, the road to recovery can be extremely challenging. Cartilage has a very limited ability to regrow and heal itself.

    research, regrow cartilage, recovery, tissue, regeneration
    A doctor examines a knee.
    Photo credit: Canva

    Regrowing cartilage with a rubbery goo

    This breakthrough bioactive material doesn’t just passively sit in the body, it binds to and integrates with surrounding tissue, promoting cartilage regeneration. The substance forms a network of components that imitate the body’s natural environment. A scaffold-like structure allows cells to connect and rebuild cartilage tissue.

    “The problem is that, in adult humans, cartilage does not have an inherent ability to heal,” said Samuel I. Stupp, who led the study. “Our new therapy can induce repair in a tissue that does not naturally regenerate. We think our treatment could help address a serious, unmet clinical need.”

    protein, sheep, bioactive material, damaged tissue, protein fragments
    Damaged cartilage stained red.
    Photo credit: Samuel I. Stupp/Northwestern University

    Bioactive material regenerates high-quality cartilage

    In the study, Stupp and his team applied the material to damaged cartilage in sheep. These animals have weight-bearing loads comparable to human knees.

    The biomaterial, made from short protein fragments and a modified version of hyaluronic acid, behaves similarly to naturally occurring cartilage in the body. Stupp explained the reasoning behind using hyaluronic acid, saying, “It’s also naturally found in many tissues throughout the human body, including the joints and brain. We chose it because it resembles the natural polymers found in cartilage.”

    After fewer than six months, the new cartilage showed high-quality regeneration and strong indications that the repair could work in humans.

    hyaluronic acid, cartilage repair, natural polymers, structure, surgery, regrow cartilage
    Treated cartilage stained red shows repair.
    Photo credit: Samuel I. Stupp/Northwestern University

    Limited solutions to damaged knees

    Cartilage damage is unfortunately very common, affecting more than 500 million people worldwide. For decades, the message has been discouraging: once cartilage is damaged or disappears, it’s gone for good.

    A 2025 study found that current treatments, such as surgery, cell implants, and microfracture, may help in the short term but often produce weaker cartilage soon after. Failure rates for microfracture surgery have led to as many as 41% of patients requiring total knee replacement. Finding reliable, long-lasting solutions is still a work in progress.

    A 2025 study on cartilage repair found that, although many people felt better after surgery, up to 48% developed arthritis over time. Only 17–20% returned to playing sports, and some required additional surgeries, including knee replacement.

    yoga, exercise, standard care, arthritis, goo-like material,
    A woman practices yoga.
    Photo credit: Canva

    Study hopes to change the standard of care

    Researchers believe the bioactive material could be used in most joint surgeries. With these promising findings, the goo-like substance could one day make a meaningful difference for anyone hoping to move without pain again.

    “By regenerating hyaline cartilage, our approach should be more resistant to wear and tear, fixing the problem of poor mobility and joint pain for the long term while also avoiding the need for joint reconstruction with large pieces of hardware,” Stupp said.

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