Early this January, the American Red Cross made an emergency call for blood and platelet donations across the United States due to a severe winter shortage. Human blood, unlike computers, smartphones, and cars, cannot be manufactured, and no substitute for it has yet been invented. At the same time, blood, like fresh produce, is a perishable product, with platelets lasting five days and red blood cells 42.


[quote position=”right” is_quote=”true”]Donors, who are the raw material suppliers of blood products, typically can donate no more than three times per year.[/quote]

But why do we run out of blood, anyway? Though we need donors to step up and contribute during a shortage, the trouble stems from the fact that demand for blood is unpredictable. We don’t usually need a lot of it unless there is a natural disaster or other public health emergency. And the blood industry is at a crossroads, due to fluctuating demand over the past decade.

Hospitals are now requiring less blood as compared to a few years ago because of changes in medical practices, leading, at times, to a surplus in overall supply. In 2011, a total of 1.2 million fewer units of blood were used in hospitals as compared to 2009, bringing them a $274 million savings in terms of costs. When it comes to healthcare, the words “supply chain” may not come to mind, instead conjuring up images of manufacturing plants, warehouses, trucks and shipping docks. But our inefficient blood supply chain has resulted in a relatively strong supply and a weak demand for blood at the blood banks, which gives hospitals the upper hand while negotiating with suppliers.

In fact, hospitals are now demanding lower prices from the suppliers, and many are even considering switching to alternative blood banks. An example of this was at the Indiana Blood Center in 2014, where three of their major under-contract hospitals opted for a cheaper price offered by the Red Cross. This led to a one-third shrinkage in Indiana Blood Center’s revenue, forcing the company to revise its business model by cutting the costs as much as possible.

The excess supply, along with increased competition, force the blood suppliers to lower their prices. The hospital cost of a unit of red blood cells in the U.S suffered an almost 10 percent drop from 2011 to 2014. A simultaneous drop in the demand and the price of blood products has tremendously affected the players involved in the blood supply chain, with the blood banking industry revenue dropping to $1.5 billion per year in 2014, down from $5 billion in 2008. Being hit by such a severe revenue loss over a short period, one of the first actions taken by blood providers was to lower their costs by cutting jobs. It is expected that, over the next few years, the blood banking industry in the U.S. will lose 12,000 jobs, roughly a quarter of its workforce, due to the financial stress.

My area of expertise in business supply chains offers some clues as to how the blood industry can address some of its biggest supply chain challenges.

First thing’s first: We can’t mass-produce blood.

We probably can all understand that a blood shortage can have devastating consequences in the face of disaster. What may be less recognized is that a continued budget deficit for blood services leads to a reduced budget for research on blood banking and related fields. Such an impact may not only threaten the effectiveness and safety of various activities in the blood supply chain but may also negatively affect the responsiveness at times of crises and disasters.

[quote position=”left” is_quote=”true”]A multi-billion dollar industry has evolved out of the demand for and supply of blood, with the global market projected to reach $41.9 billion by 2020.[/quote]

Blood is a hard commodity to manage for many reasons. First, regular replenishment of the blood supply is necessary. Also, supply is completely dependent on donations by individuals to the blood banks and blood service organizations collecting blood, which, for the most part, are nonprofits.

Still, a multi-billion dollar industry has evolved out of the demand for and supply of blood, with the global market for blood products projected to reach $41.9 billion by 2020. The United States constitutes the largest market for blood products in the world. Donors in the U.S. and some others countries are typically not paid.

In the U.S., the American Red Cross supplies about 40 percent of the blood, with America’s Blood Centers, with 600 blood donor centers, providing about 50 percent (and about one-quarter of the blood in Canada). The remainder is collected by hospitals and medical centers themselves or, lately, by profit-maximizing blood suppliers.

But we don’t need as much blood as we used to. (And that’s part of the problem.)

Prior to 2008, hospitals and other surgical centers consistently reported blood shortages every year. This resulted in the cancellation and postponement of elective surgeries.

Things changed. In part because of medical advances, some procedures do not require as many pints for transfusion. This decrease in demand for blood is posing great challenges for the industry, resulting in consolidations and mergers of testing labs and processing facilities.

In response to the drop in demand, suppliers formed partnerships. Mergers have taken place to counteract rising costs of blood banking operations and even to work for enhanced safety, availability and affordability of blood for hospital partners and patients. At times, the reconfigurations have included the closing of testing facilities as done by the Red Cross.

[quote position=”full” is_quote=”true”]The unpredictability of natural and man-made disasters mandates that all blood banks stay alert and be responsive to fluctuating demand and supply.[/quote]

According to the America’s Blood Centers, the largest network of nonprofit community blood centers in North America, 19 partnerships and mergers were formed in the five years from 2010-2015 among their member blood banks, reducing the size of the network from 87 to 68 members. That represents a doubling from the 1990s, when 19 mergers took place during 10 years rather than five.

Better tracking tools may matter as much as donors.

My colleagues and I have been researching blood supply chains, from enhancing their operations with collection, testing and distribution to hospitals and medical centers. The goal is to minimize costs as well as risk and waste and to optimize the supply chain network design.

More recently, our research has turned to the assessment of mergers and acquisitions, since some of its evolving features have taken on the characteristics of corporate supply chains, which we can learn from and take advantage of.

Identifying potential synergies prior to a merger or acquisition (M&A) can provide quantitative measures; indeed, real numbers, as to whether or not such an M&A should take place. In addition, there may be synergies associated with cooperation, rather than a complete merger or acquisition. For example, different blood service organizations may benefit from utilizing shared testing facilities, common facilities for procurement and even vehicles for the delivery of their blood products to hospitals and medical centers.

In addition, donors must be nurtured. Donors, who are the raw material suppliers of blood products, typically can donate no more than three times per year. An estimated 38 percent of the U.S. population is eligible to donate blood at any given time, but less than 10 percent of that eligible population actually donates blood each year.

When demand goes up, we should turn to technology.

The future for blood supply chains is fraught with uncertainty. There could be another rise in demand in coming years due to population increases. Second, changing demographics, such as baby boomers’ aging, will be a new influence. The unpredictability of natural and man-made disasters mandates that all blood banks stay alert and be responsive to fluctuating demand and supply.

It is imperative to apply supply chain analytics tools derived from industry to assist in both supply side and demand management to make for the best utilization of a lifesaving product that cannot be manufactured—that of human blood.

  • Getting outside despite your 9‑to‑5 job can improve your mental health – here’s how to spend time in nature during and around working hours
    Photo credit: Todd Lookingbill Urban parks are great places to soak in the outdoors without planning an elaborate trip.

    The modern workday unfolds largely indoors. Long hours spent commuting, sitting in meetings and staring at screens can make time outdoors feel like a luxury. Finding time for nature in an already packed workday can feel impossible, especially if you think nature only “counts” when it involves hiking boots and camping gear.

    But a growing body of research suggests that nature’s benefits don’t require an exotic vacation getaway or weekend adventure. Even brief, routine interactions with green space can reduce stressimprove mood and promote overall well-being.

    I spent the spring of 2026 teaching and studying urban landscapes in Denmark, a country consistently ranked among the happiest in the world. I expected to find thoughtfully designed parks, courtyards and bicycle paths. I did see those things. But what surprised me was how seamlessly people moved through those spaces as part of their ordinary lives.

    These green spaces weren’t aspirational destinations, reserved for special occasions. They were places to eat lunch, meet friends, walk through on the way home from work, or just pause for a few quiet moments. Getting outside seemed a part of the natural rhythm of the day.

    Denmark‘s outdoor culture stemmed not only from the creation of a meticulously planned network of parks, but also from the way green spaces were fundamentally woven into the routines of everyday life.

    A wooden bench in an outdoor park
    A wooden bench in one of Copenhagen’s forest therapy parks invites people to sit and soak in their surroundings. Todd Lookingbill

    Everyday parks, everyday benefits

    Evidence linking time spent in nature with health benefits has increasingly shaped public policy. In the U.S., for example, the National Park Service’s Healthy Parks Healthy People and ParkRx initiatives reflect a growing recognition that access to parks contributes to well-being.

    For many Americans, however, the word “park” brings to mind iconic national parks such as Yellowstone, Yosemite or the Grand Canyon. Yet visiting parks of all kinds can improve your overall health. The greatest public health value may come not from the parks people visit once in a lifetime but from those close enough to visit again and again.

    My own research on Civil War battlefield parks illustrates this point. These are parks that were established to commemorate historic conflicts that were frequently fought on the fringes of major metropolitan areas. Consequently, many of these landscapes preserve forests, grasslands and trails within easy reach of millions of Americans.

    Because they’re accessible without extensive travel or planning, they can become places people return to repeatedly – such as during a lunch break or after work. Reframing the notion of “park” opens up millions of acres of land for everyday uses.

    Designing for everyday nature

    At the University of Richmond, where I work, a stream restoration projects became an opportunity to rethink how nature fits into campus life. Landscape architects designed an Eco-Corridor, as the project became known. It has walking paths, gathering spaces and seating areas for quiet reflection alongside flowing streams and native vegetation.

    The result was a landscape that supports biodiversity and improves water quality while also creating places for students, faculty and staff to walk between meetings, eat lunch alfresco or spend a few quiet moments outside during the workday. Its ongoing care depends on an army of volunteers who spread mulch, remove invasive plants and tend the community garden. For these volunteers, stewardship between classes and meetings meant another opportunity to interact with nature.

    A group of young people walking along a concrete path lined with trees and shrubbery.
    Students walk through the ‘Eco-Corridor’ at the University of Richmond. Haley Herrmann

    What we learned was that nature doesn’t have to compete with work, studying or everyday responsibilities. Thoughtful landscape design can make spending time outdoors, even if only for a few short minutes, feel like a normal part of the day.

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

  • New Russian research suggests that the human lifespan could be up to 156 years
    Photo credit: CanvaResearchers found what's preventing us from living longer.
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    New Russian research suggests that the human lifespan could be up to 156 years

    Humans can live much longer if certain barriers are addressed.

    According to the Guinness Book of World Records, the oldest person lived to the ripe age of 122 years old. Such a lifespan is an incredible feat, but what if the average person could beat that record by 34 years? Recent research done in Russia has led scientists to believe that the average human lifespan could be up to 156 years.

    The researchers at Skoltech Biomed Technologies Center developed a mathematical model that allowed them to “switch on” a variety of aging mechanisms. This allowed them to calculate a human’s lifespan where mortality risk never increased with age. After experimenting with different scenarios and conditions, they found the biggest barriers to longevity were caused by non-renewable tissues and somatic mutations.

    What are these barriers against longer life?

    Somatic mutations are DNA changes within a cell. They accumulate over time during a human’s life and cannot be reversed with any existing therapy. These DNA errors that pile up in our cells contribute to the aging process.

    Many human organs like the liver and skin continually replace cells and regrow damaged portions of themselves. However, there are two organs that can’t do this: the brain and the heart. Brain tissue (neurons) and heart tissue (cardiomyocytes) cannot regenerate. This proves to be the most prominent biological limit that shortens our lifespans. This explains why issues like dementia and heart disease are prominent causes of death and morbidity later in life. Since those organs’ tissues don’t replace damaged cells, they’re prone to irrevocably decline over time.

    “The key finding of the study is the discovery of substantial differences between tissue types. Neurons and cardiomyocytes, which lack the ability to divide, turned out to be the main limiting factors: when all other causes of aging are eliminated, somatic mutations alone reduce the theoretical median lifespan from 1,759 years (for a hypothetical non-aging human organism) to 156 years,” said Evgeny Efimov, a research intern at the Skoltech Biomed Technologies Center, researcher at AIRI, and one of the key authors of the study.

    This suggests that somatic mutations and DNA damage is what ultimately prevents humans from living indefinitely, even if our brains and hearts regenerated cells like other organs.

    So what’s next?

    Now knowing these biological limitations, the researchers hope to study other areas of aging impacting the human lifespan that could plausibly be reversed. This includes mitochondrial dysfunction, telomere shortening, epigenetic drift, and loss of proteostasis. 

    The hope is to have a clearer priority list of issues for future therapies to tackle. This is not just to possibly extend life, but to improve lives in general. By developing a fully comprehensive theory of aging, Skoltech hopes to pinpoint which aspects of aging are within our scope to address. After all, thoroughly studying each puzzle piece that makes up human life gives us a better understanding of the whole.

    Of course, other impactful factors in a person’s lifespan can be addressed today. As most know, things like diet, sleep, and exercise are among them. A person’s living environment can also negatively impact their lifespan if it doesn’t have clean air, access to clean water, and so on.

    For now, the best method for living long is to follow instructions from your physician. Whether you make it to 156 years or not, living well is best for whatever time you’re given.

  • Screen time guidelines for kids and adolescents have shifted as research paints a more nuanced picture
    Photo credit: PeopleImages/iStock via Getty ImagesWhat kids are doing on tablets seems to matter more than how long they use them.

    Concerns surrounding young people’s screen time are widespread.

    Australia became the first country to ban social media for users under 16 in December 2025, and DenmarkFrance and the U.K. have since announced similar restrictions to begin this year.

    In the U.S., as of mid-2026, more than 30 states have passed laws banning or restricting cellphones in K–12 classrooms; in 2023, the U.S. surgeon general issued a formal advisory on social media and children’s and adolescents’ mental health; and bestselling books tell parents that smartphones are “rewiring” their children’s brains.

    These concerns and policies are part of a quickly changing national and international conversation around how young people spend time on screens and its relationship to their overall health and development. My reading of the mounting research on this issue across disciplines is that the popular narrative blaming screens and smartphones for an adolescent mental health crisis runs well ahead of the current evidence.

    I study adolescent digital media use and its influence on social, emotional and academic outcomes. A growing body of research suggests that one-size-fits-all solutions are not the answer and that managing appropriate use of digital media needs to take into account a child’s developmental milestones, how parents and adults around them use media, and the ways kids use it to connect and learn with friends and family.

    Screen time: From monolith to multifaceted

    Wide adoption of digital media and the internet broadened the range of experiences young people could have online. At the same time, the digital age introduced newfound uncertainties. As with the advent of radio, comic books and arcades, adults worried about how children might interact with or be affected by internet use.

    In response, the American Academy of Pediatrics first recommended in 1999 that parents and caregivers keep children under 2 away from screens. In the decades since, professional guidance largely treated children’s media use as a behavior to be mitigated.

    Policies introduced by the academy in 2013 and 2016 continued to advise that school-age kids and adolescents – those ages 5 to 18 – be restricted to no more than two hours of “entertainment” screen time a day. The goal was to curb risks associated with heavy media use, among them disrupted sleep, online safety, cyberbullying and physical inactivity.

    Originally created for young people’s engagement with stationary media that tend to be confined to one room or context – for example, watching television – these hourly limits became outdated with the integration of smartphones and other digital devices into everyday life. Compared with watching television, online media was far more difficult to track and define, and more nuanced in its use.

    Developmentally beneficial activities such as educationsocializing and leisure have come to rely on the internet to extend and maintain face-to-face connections. Remote schooling and social distancing during the COVID-19 pandemic only accelerated this digitization of daily life.

    In my view, adopting strict time limits and restrictions could pose risks to children’s well-beingautonomy and development, for example, by harming adolescent self-esteem.

    The latest guidelines

    In January 2026, the American Academy of Pediatrics retired its decade-old framework that had largely organized its advice around hourly screen limits. The new policy statement on children, adolescents and digital media diverges from this blanket approach. Instead, it suggests parents consider the larger picture in which this media use exists rather than lumping all screen use together.

    Similar to the World Health Organization’s 2019 guidance for children under 5, the American Academy of Pediatrics still advises that parents avoid screen media for children younger than 18 months. This recommendation is largely because extended use by children by themselves can be problematic for many young children, crowding out important developmental milestones.

    Both the World Health Organization and the American Academy of Pediatrics also recommend that when children under 24 months use screens, they should be limited to content and devices that encourage children and caregivers to interact. For ages 2 to 5, screen time – including TV and interactive apps on devices – may be extended to more solo use, provided it’s high-quality digital media designed around learning goals in mathematics and reading. But recreational use should be limited to roughly an hour per day.

    For school-age children and teens, the newest guidance has begun to step away from fixed screen time limits and asks families to weigh online activity in the context of everyday life.

    Doing so recognizes that a child’s digital experiences are shaped by diverse factors rather than the hours spent online. Current guidelines call on caregivers to distinguish among types of media, from television and social media to video games and interacting with artificial intelligence chatbots. They also call for taking into account a child’s individual characteristics, such as their interests and personality, family members’ own use of screens, and the type of content children are spending time on.

    Rethinking screen time

    Moving beyond strict screen time limits includes questioning the kind of digital activities kids and adolescents participate in. Do the activities encourage time spent interacting with others online, which can help young people develop important skills and competencies?

    Scrolling an algorithm-based, auto-playing video feed likely does not equate to the same opportunities as video-chatting with friends, creating digital art or working with teammates in a multiplayer game. Research suggests these different uses relate to development in different ways and can help kids develop varying skill sets pertaining to everyday life and schooling.

    Indeed, a large review of current research found that young people who take part in a range of digital activities, such as browsing the web, online gaming or interacting on social media, show positive associations with social connection, identity exploration, civic participation and learning.

    A woman and two small children look at tablet screen
    Parental involvement in young children’s screen time has developmental benefits. Cultura Creative/Tetra images via Getty Images

    Using these guidelines at home

    The current evidence suggests parents and caregivers are best positioned to be digital instructors. Cutting children off altogether can carry its own risks for social and emotional development. Caregiver mediation of children’s screen time can produce widely different outcomes and effects, depending on whether the guidance is supportive or controlling.

    Considering your own digital media use is the first step: Are family members engaging in problematic or heavy media use that children in the household might emulate? What applications and uses are most common in the family, and what positive or negative effects might they have, depending on the child’s age? How could these digital activities be safely integrated with other everyday experiences to increase their benefit for children? Conversely, what online time might be better spent on face-to-face experiences?

    The American Academy of Pediatrics’ Family Media Plan tool turns these ideas into concrete questions. For example, it recommends working out what each child needs from digital technology, what activities screens might be crowding out, and where their family or household can build in screen-free time. The recommendation is to talk with each child about why they are drawn to particular apps or online activities, what they encounter while browsing, and what might be lost when kids bring phones to gatherings such as mealtimes.

    The debate over young people’s screen time is not going away. But the most up-to-date guidelines, and the growing body of research behind them, make a strong case for a more holistic approach. The guidelines treat digital media as a complex, diverse and evolving environment that children need to learn to navigate in the digital age. The risks and rewards depend, as with any developmental setting, on the child, the content and what online time might be crowding out.

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

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