Australia Faces Historic Diphtheria Outbreak: The Largest in Recent Memory

Medical workers preparing diphtheria and tetanus vaccines

Preparation for Diphtheria and Tetanus Vaccination

Simanjuntaku/EPA-EFE/Shutterstock

Diphtheria cases are rising in Australia, marking a concerning trend for the first time since the advent of widespread vaccination in the 1930s.

The nation has reported 230 cases
of this dangerous bacterial infection along with 1 related adult death this year. The surge is attributed to increasing case numbers, primarily affecting remote Indigenous communities in the Northern Territory and Western Australia, and smaller incidences in Queensland and South Australia. Historically, the annual infection rate hovered around zero.

According to Paul Burgess, the Chief Health Officer of the Northern Territory, the latest outbreak stems from an incident dating back to 2022 in Queensland, originally contracted overseas. This highly contagious disease has since spread to Indigenous communities across the Northern Territory and neighboring states, driven by vaccination gaps, high mobility between communities, and crowded living conditions.

Vaccination coverage for diphtheria among five-year-olds in the Northern Territory stands at approximately 92%, but only around 67% of 13-year-olds receive necessary booster shots available through school-based programs. Raina McIntyre from the University of New South Wales noted, “The effectiveness of the vaccine is waning, and booster immunizations are urgently needed.”

This trend partly explains why adolescents and young adults are increasingly falling ill with diphtheria.

Challenges in achieving optimal vaccination rates stem from “increased vaccine misinformation and backlash following the COVID-19 pandemic,” as McIntyre observed. The shortage of healthcare professionals in remote areas further complicates matters.

The diphtheria infection is caused by the Diphtheria bacterium, which affects the skin and respiratory system, producing a toxin that leads to severe complications. Symptoms include painful throat ulcers or a thick gray film in the throat that can obstruct breathing. When toxins enter the bloodstream, severe outcomes, including heart failure and paralysis, may occur.

This bacterium can be transmitted through contact with sores of an infected person or through respiratory droplets.

While treatment can include antibiotics and antitoxins that neutralize the diphtheria toxin, mortality can still occur despite medical intervention.

Before the diphtheria vaccine was introduced, the disease was a leading cause of child mortality worldwide. In Australia, over 4,000 deaths were attributed to diphtheria between the late 1920s and early 1930s.

The Australian government recently announced a funding package of A$7.2 million (£3.8 million) to combat the outbreak, deploying additional healthcare professionals to affected regions for increased vaccination efforts and treatment administration.

Burgess emphasized to the ABC: “We are encouraged by the strong community demand for vaccination in response to this outbreak.”

Globally, the largest diphtheria outbreak since routine immunization began occurred in countries of the former Soviet Union post-1991, with an alarming rate of 140,000 infections and 5,000 deaths resulting from a collapse in vaccination coverage, underscoring that “vaccine program disruptions can lead to outbreaks,” stated McIntyre.

Topics:

  • vaccine /
  • infectious disease

Source: www.newscientist.com

How Earth’s Aging Process Mirrors the Effects of Space Travel

NASA astronaut Scott Kelly

NASA astronaut Scott Kelly spent 340 days in space on one mission.

NASA

The twin paradox is a classic thought experiment in physics first proposed by Albert Einstein in 1905. This fascinating scenario imagines astronauts journeying through space at nearly the speed of light while their twin remains on Earth. Upon their return, the space traveler discovers their twin has aged significantly more. This discrepancy in aging relates to the relative passage of time experienced by travelers moving at such extreme speeds compared to those stationary on Earth. This concept serves as a reflection on aging in our universe.

While traveling at light-speed remains theoretical, surprising evidence indicates that space travelers actually age more rapidly. Research shows that astronauts spending six months aboard the International Space Station (ISS) age 40 times faster than their Earthbound siblings, according to certain measurements.

As we continue our journey into understanding aging, it’s critical to recognize that many factors exacerbating accelerated aging are becoming increasingly prevalent here on Earth. The encouraging news is that insights gained from protecting astronauts can lead to solutions beneficial for everyone.

To date, about 781 individuals have ventured into space, with varying lengths of stay. While many were briefly aboard, nearly 300 astronauts have completed missions on the ISS, where they typically remain for over six months.

NASA has been vigilant regarding the health impacts of prolonged space missions and is actively researching these effects as we prepare for future Mars expeditions and beyond.

One notable study is the NASA Twin Study. Initiated in 1996, this groundbreaking research involved twin astronauts Scott and Mark Kelly. Both have taken part in shuttle missions, with Scott spending time on the ISS. Following his selection for a year-long ISS mission in 2015, NASA seized the chance to conduct a twin study—a method that assesses the interplay of genetic and environmental factors on health. Although the sample size was limited, significant findings emerged.

Researchers documented changes, particularly in inflammatory markers. Following a year in space, Scott exhibited heightened levels of inflammation and reduced levels of anti-inflammatory cells. These changes are aligned with the characteristics of aging, pinpointing that long-duration space living correlates with accelerated aging markers. Subsequent investigations into other astronauts have confirmed that extended stays in space evoke at least four aging characteristics, including chronic inflammation and mitochondrial dysfunction.

Astronauts also face rapid physiological aging symptoms, including declines in cardiovascular health, muscle and bone loss, cognitive impairments, and immune dysfunction. Notably, one cardiovascular measure indicates that astronauts may experience internal aging equivalent to two decades in just six months.

According to research from Daniel Weiner at the Buck Institute on Aging, four space-related factors play significant roles in accelerating aging: the absence of gravity induces muscle and bone atrophy; compressed light-dark cycles disrupt circadian rhythms; exposure to high levels of ionizing radiation; and social isolation, all of which are aging factors.

The negative effects of living in space are comparable to stressors on Earth.

Carly Photography/Getty Images

You may wonder about the relevance of this research to Earthbound individuals. Interestingly, many conditions faced by astronauts share similarities with challenges encountered daily by people. While we may not experience microgravity, a sedentary lifestyle impacts muscles and bones similarly. Moreover, disrupted circadian rhythms and social isolation affect countless individuals, while high levels of ionizing radiation can stem from naturally-occurring radon gas.

Although the mechanisms of aging remain complex, studies involving long-duration astronauts may illuminate these processes. According to Weiner, astronauts serve as exceptional model organisms for aging research; their experiences in space mimic an intense, acute version of chronic stressors contributing to age-related declines in terrestrial populations.

Research efforts focus on discovering anti-aging interventions, benefiting not only astronauts but the broader public as well. NASA remains committed to the health of its personnel and is collaborating with Weiner’s team to uncover molecules that could offset the aging effects of spaceflight. Over the last 70 years, NASA has contributed to various medical advancements, emphasizing the potential societal benefits of their ongoing research endeavors.

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Source: www.newscientist.com

Over 1 Billion Birds Die Annually in the U.S. Due to Building Collisions: Here’s Why

Birds often struggle to distinguish between the outdoors and reflective glass surfaces, leading to collisions with buildings when they mistake reflections of the sky and surrounding vegetation for the natural environment.

Moreover, urban lighting attracts migratory birds at night, increasing the risk of these dangerous encounters.







According to a 2024 study, over 1 billion birds are estimated to perish each year in the United States due to collisions with buildings.

This alarming number exceeds previous estimates, as it includes not only those found deceased at the crash site but also birds that succumbed to injuries while receiving care post-collision.

Researchers are advocating for the construction of bird-friendly buildings, suggesting the addition of visual markers on windows to help reduce these incidents.


This article addresses the question: “How many birds fly into buildings?” (asked by Barry Megan via email).

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80 Million Years Ago: How T. rex and Mosasaurs Dominated the Oceans

Paleontologists have unveiled a colossal new species of Mosasaurus, measuring an impressive 13.2 meters (43 feet) in length, and equipped with serrated teeth, leading to its intriguing name: Tylosaurus rex.



Reconstruction of Tylosaurus rex in the Cretaceous Western North American Interior Seaway. Image credit: Alderon Games / Path of Titans.

Mosasaurs, ancient giant marine reptiles, thrived during the Late Cretaceous Period, approximately 100 to 66 million years ago.

Often likened to dinosaurs, these creatures are actually more closely related to contemporary monitor lizards and snakes.

The family Mosasaurs is categorized into four main subfamilies: Mosasauridae, Plioplatecarpinidae, Tylosauridae, and Halisauridae, each showcasing unique adaptations like flippers, streamlined bodies, and significant size variations.

Among them, Tylosaurid mosasaurs are characterized by a toothless snout, elongated tail, and minimally ossified limbs, adaptations that facilitated their life in open waters.

These ancient reptiles were among the first to achieve true gigantic sizes, surpassing 8 meters (26 feet) in length.

Tylosaurid fossils have been discovered across Europe, Asia, New Zealand, Africa, and Antarctica, with a remarkable abundance along the Western Interior Seaway of North America.

“Everything seems to be bigger in Texas, including mosasaurs,” stated study lead author Dr. Amelia Zietlow, a paleontologist from the American Museum of Natural History.

Dr. Zietlow’s research journey began as a doctoral student, when she identified what seemed to be a misclassified mosasaur fossil from the museum’s collection, previously labeled as Tylosaurus proliger.

Upon comparing her specimen with the holotype Tylosaurus proliger, she and her team concluded that their find, along with over a dozen similar fossils from various institutions, belonged to an entirely different mosasaur family.

This distinction was significant; the fossils of Tylosaurus proliger displayed finely serrated teeth, a rarity among mosasaurs.

While the typical Tylosaurus proliger specimen was found in present-day Kansas and dated to around 84 million years ago, the newly discovered fossils, primarily from Texas, are roughly 4 million years younger.

“The holotype for the newly categorized Tylosaurus rex is an impressive specimen displayed at the Perot Museum, first located in 1979 near Dallas,” remarked paleontologists.

Beyond its massive size, the newly identified Tylosaurus rex showcased a range of adaptations that contributed to its formidable jaw and neck muscles, indicating it was a powerful predator.

“Being approximately twice the length of the largest great white shark, Tylosaurus rex appears to have been a much more aggressive creature compared to other mosasaurs,” explained co-author Dr. Ron Tycosky, curator of vertebrate paleontology at the Perot Museum.

“Studies of well-preserved fossils gathered from across North Texas revealed unprecedented levels of internal conflict within this species, unlike any other Tylosaurus fossils previously documented.”

“Evidence of this aggressive behavior includes the “Black Knight,” a specimen housed in the Perot Museum that is missing the tip of its nose and has a fractured jaw, injuries likely caused by its own kind.”

“Other notable mosasaurus specimens previously known as Tylosaurus proliger, now reclassified as Tylosaurus rex, include the remarkable specimen ‘Bunker’ discovered in 1911 and exhibited at the University of Kansas, as well as ‘Sophie’ at Yale University’s Peabody Museum.”

The research team’s published paper appears in today’s Bulletin of the American Museum of Natural History.

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Amelia R. Zietlow et al.. 2026. A new giant species of Tylosaurus from Texas (Mosasauridae), and an updated character list for phylogenetic analysis of Mosasauridae. Bulletin of the American Museum of Natural History 482; doi: 10.1206/0003-0090.482.1.1

Source: www.sci.news

Why Big Dreams Can Lead to Exhaustion and Suffering: Understanding the Hidden Costs

Imagine waking up drained instead of refreshed, not because of a lack of sleep, but due to being trapped in relentless, vivid dreams. For many experiencing these “grand dreams,” the repercussions can greatly disrupt daily life.

“These intense experiences linger in my mind, exhausting me and causing constant fatigue,” shares Madame R, a 38-year-old grand dreamer.

Madame R is one of four grand dreamers studied across two centers in France. Despite the scientific explanations for her condition, the phenomenon has been observed for over 20 years. Researchers advocate for recognizing these sleep disturbances as distinct disorders, as supported by detailed case studies from Pierre Geoffroy from the University of Paris.

In her analysis, Madame R noted she has always had extraordinary dreams, a condition that intensified after the birth of her second child. Other subjects included Monsieur W, a 74-year-old whose dreams blur the line between reality and imagination.

Another participant, Monsieur D, 58, reported experiencing excessive dreaming twice weekly for four years. Madame W, 40, stated she cannot recall a moment without dreams, expressing, “It feels like my brain never shuts down at night.”

Dreams can manifest during any sleep stage; however, Geoffroy asserts that due to the narrative-driven nature of these dreams, they likely occur predominantly during the rapid eye movement (REM) stage.

Excessive dreaming could signify extended REM sleep. Polysomnography tests conducted on three of the four dreamers revealed typical REM stages, or slightly reduced sleep duration.

Geoffroy remarked that the polysomnography findings were “not particularly remarkable.” Yet, results indicated increased REM density and microarousals—frequent disruptions that fragment REM sleep. These micro-awakenings could enhance dream recall, leading individuals to feel as if they’ve been dreaming all night.

If a person’s brain consistently remembers their dreams as vivid experiences, they may awaken feeling unrefreshed, despite seemingly adequate sleep data. Ivana Rosenzweig at King’s College London stated, “This doesn’t imply dreaming occurs every second; rather, it questions why the sleep brain fails to let dreams fade, blending them into waking life.”

Researchers also explored if grand dreams correlate with poor mental health, which could contribute to sleep issues. While all participants completed psychiatric assessments, three exhibited signs of depression or anxiety, yet managing these conditions did not alleviate excessive dreaming. Jeffrey pointed out that grand dreams may represent a separate disorder.

Dr. Rosenzweig emphasized that the study “highlights a clinically significant phenomenon that many sleep specialists recognize but is inadequately represented in current diagnostic frameworks.” However, she noted that more extensive research is essential before classifying grand dreams as a unique sleep disorder.

Francesca Siclari from the Netherlands Institute for Neuroscience also advocates for further investigation, highlighting, “One major challenge is to determine if excessive dreaming stems from a singular mechanism or represents symptomatic elements across various sleep and psychiatric disorders.”

Rosenzweig and her team anticipate that upcoming research may clarify why some grand dreamers struggle to differentiate between real-life occurrences and dream scenarios. Their ongoing investigations suggest that grand dreams extend beyond atypical sleep disorders, posing fundamental questions regarding the brain’s perception of reality.

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Source: www.newscientist.com

How AI Has Transformed Mathematics: The Biggest Breakthrough in Math History

Plane Unit Distance Problem

The Plane Unit Distance Problem explores the maximum number of equally sized lines connecting points on an infinite paper.

Noga Alon et al. 2026, OpenAI

An 80-year-old mathematical conjecture, known as the plane unit distance problem, has been solved by OpenAI’s advanced artificial intelligence model. This breakthrough is igniting discussion around the immense mathematical capabilities of AI.

“This is a problem I never expected to see solved in my lifetime,” states Mischa Rudnev from the University of Bristol, UK. “It’s a groundbreaking achievement.”

Tim Gowers commented that the solution represents a “significant milestone in AI mathematics.” He noted in a paper that had it been submitted by a human, it would be accepted without hesitation, highlighting that such groundbreaking evidence of AI-generated solutions is rare.

The plane unit distance problem was deemed by the 20th-century mathematician Paul Erdős as his “most important contribution” to geometry. The challenge lies in determining the maximum number of lines of equal length that can connect numerous dots placed on an infinite paper.

Erdős believed that the optimal arrangement for maximum connections would be a grid layout, suggesting that the number of lines would surpass the number of points only marginally. Persistent efforts to prove his assertion or to discover alternative patterns yielded minimal advances, with the most recent improvements occurring over 40 years ago.

OpenAI’s model revealed that Erdős’s hypothesis was significantly underestimated, demonstrating that a more irregular arrangement of points can yield far more connections.

“Initially, I could hardly believe the results,” remarks Will Sawin from Princeton University. “It convinced me that this achievement is the most remarkable in the realm of AI mathematics so far.”

Details on how the OpenAI model diverges from publicly available AI technology and its training methods remain undisclosed. However, researchers have mentioned that the model is “general purpose” and was not specifically trained for mathematical applications.

AI employed strategies from algebraic number theory to establish extensive lattices in dimensions far exceeding two-dimensional configurations. By creating these more sophisticated shapes, AI translates them into two dimensions to generate representations of the higher dimensions.

“The counterexamples produced by AI are intricate, and while the foundational ideas exist in existing literature, the synthesis to achieve them required ingenuity,” explains Kevin Buzzard from Imperial College London.

While the magnitude of this result is undeniable, it underscores a gap in mathematicians’ consideration of Erdős’s original predictions. Samuel Mansfield from the University of Manchester, England, notes that the complexity of executing an experiment to challenge the conjecture would have eluded many geometry experts lacking advanced number theory knowledge. “This highlights a necessity for interdisciplinary expertise,” he adds. “In hindsight, AI’s adaptability in this area may not be surprising.”

Rudnev emphasized that the problem’s allure lies in its “pure intellectual challenge,” and although it may not directly influence other unresolved questions, it has inspired further research. Sawin, after examining the proof, utilized the techniques unearthed by AI to advance the number of connectable points.

“Similar to many other AI milestones, it didn’t take long for human researchers to internalize, comprehend, and extend upon the AI-derived arguments,” commented Buzzard. “This contrasts sharply with human discoveries that often require extensive validation periods.

Topics:

  • Artificial Intelligence/
  • Mathematics

Source: www.newscientist.com