Global Pulse

分类： science

  • August’s total solar eclipse will sweep over Spain, Iceland and Greenland

    August’s total solar eclipse will sweep over Spain, Iceland and Greenland

    After more than a century without a total solar eclipse crossing its mainland, Spain is poised to welcome a breathtaking celestial event on August 12, capped by an even longer dramatic astronomical showcase next summer. To amplify the spectacle, the once-in-a-generation eclipse will coincide with two other extraordinary sky phenomena: a six-planet alignment and the peak of the annual Perseid meteor shower, creating a rare triple treat for stargazers across the Northern Hemisphere.

    When the sun, moon, and Earth fall into perfect straight-line alignment on August 12, daytime darkness will descend across parts of the Iberian Peninsula, Greenland, and Iceland near the hour of sunset. The moon’s dark, sun-blocking shadow, called the umbra, will begin its journey near the North Pole and track southward across 8,260 kilometers (5,130 miles) of mostly open Atlantic Ocean, taking 90 minutes to complete its path. The longest period of totality, clocking in at 2 minutes 18 seconds, will occur off Iceland’s west coast. By the time the umbra reaches coastal Portugal and mainland Spain, where crowds of astronomy enthusiasts are already gathering, totality will narrow to just around one minute before the eclipse concludes in the Mediterranean Sea. This event acts as a preview for an even longer total solar eclipse coming in 2027, which will offer up to six and a half minutes of totality as it crosses from southern Spain through North Africa and into the Middle East.

    While only viewers along the narrow path of totality will get to experience the full, jaw-dropping effect of the total eclipse, hundreds of millions of people across a vastly larger geographic area will be able to view a striking partial eclipse. The partial shadow of the moon will reach as far north as Alaska and Siberia, covering most of Canada, the northern United States, nearly all of Europe, and large swathes of West Africa. The degree of coverage decreases the further a viewer is from the path of totality: Dublin will see 94% of the sun blocked, Oslo will see 83%, Montreal 18%, New York 9%, and just 2% coverage will be visible in Norfolk, Virginia. Astronomers stress that proper eye protection via certified special eclipse glasses is non-negotiable for any viewing of a partial eclipse, even when only a tiny fraction of the sun is visible.

    The celestial magic does not end with the eclipse. Before dawn on August 12, six planets will align into a visible arc stretching across the pre-sky, and after nightfall, the annual Perseid meteor shower will reach its peak under a dark new moon. Forecasters note that bright streaking meteors could even pass through the frame of totality, with bright planets and distant stars visible in the darkened sky during the event.

    Eclipse-chasing enthusiasts from around the world are already planning their viewing spots, and many are chasing extra rare phenomena alongside the main event. Michael Zeiler, a veteran eclipse mapmaker who is attending his 13th total solar eclipse, will be positioned on a cruise ship in a Greenland fjord serving as a guest lecturer. He plans to point a video camera north to capture the northern lights if they appear during totality, calling a large solar outburst that triggers auroras the “icing on the cake” for his experience. Zeiler notes that his excitement stems from chasing these extremely rare celestial events.

    Major scientific organizations from across the globe are also leaning into the moment, planning public watch parties, live broadcasts, and cutting-edge research. The European Space Agency (ESA) will host a public celebration in Leon, Spain, and stream live coverage from the Astrophysical Observatory of Javalambre, with NASA, the Italy-based Virtual Telescope Project, and other groups also offering global live coverage. ESA Science Director Carole Mundell emphasized that the eclipse is more than just a scientific event or an astronomical alignment: it is a shared human experience that connects all people to the broader cosmos. Two of ESA’s space telescopes will observe the eclipsed sun and its faint outer atmosphere, the corona. While the agency’s Proba-3 mission — a pair of satellites that create artificial solar eclipses for research — will be in the wrong orbital position to observe the natural eclipse from Earth, it will attempt to capture before-and-after imagery of the sun for comparison.

    U.S. university research teams supported by NASA are also conducting atmospheric studies, launching more than 60 high-altitude balloons from sites in Spain and Iceland to measure changes in Earth’s atmosphere during the brief period of cooling and darkness caused by the eclipse. Project lead Angela Des Jardins of Montana State University noted that even just a few minutes of totality is enough to cause measurable atmospheric changes from the moon’s cold shadow. On a NASA high-altitude research plane, Southwest Research Institute scientist Amir Caspi will chase the eclipse’s shadow at 740 kph (460 mph), extending the total eclipse observation time to nearly three minutes for his team. Four specialized cameras will capture the corona across nine different wavelengths, with Caspi expecting to collect thousands of high-quality scientific images during the 180 seconds of extended observation. Even though the natural eclipse is short, Caspi emphasized that the data gathered will be incredibly valuable for solar research.

    For astronomy fans in Spain, this event is just the first of a rare run of celestial shows. In 2027, an exceptionally long total solar eclipse will cross the southern tip of Spain on August 2, offering up to 6 minutes 23 seconds of totality before tracking across Morocco, Algeria, Libya, Egypt, Saudi Arabia, Yemen, and Somalia. Then in January 2028, an annular “ring of fire” eclipse will complete a unique three-eclipse sequence for the country, what ESA’s Mundell calls a “lucky coincidence.”

    This rarity of this week’s event makes it all the more special: mainland Spain’s last full total solar eclipse occurred in 1912, just two days before the sinking of the Titanic. That 1912 event was a rare hybrid eclipse that shifted between annular and total, offering only a few seconds of totality for most of the mainland, leading many astronomers to date the last major total eclipse to 1905. For Andrei Zhukov of the Royal Observatory of Belgium, who has led more than 60 simulated artificial total eclipses as part of the Proba-3 mission over the past two years, any eclipse — natural or artificial — is a cause for excitement. “We’re looking forward to more eclipses, natural or artificial,” Zhukov said.

    This report was produced by The Associated Press Health and Science Department, which receives educational funding from the Howard Hughes Medical Institute Department of Science Education and the Robert Wood Johnson Foundation. The AP retains full editorial control over all content.

  • Ancient mummy DNA provides scientific evidence that colonization brought smallpox to the Americas

    Ancient mummy DNA provides scientific evidence that colonization brought smallpox to the Americas

    For centuries, historical accounts have documented the catastrophic impact of smallpox on Indigenous populations across the Americas after European contact, but concrete genetic proof linking the virus’s arrival to colonization has remained elusive. Now, groundbreaking analysis of ancient DNA extracted from mummified remains recovered in northern Chile has delivered the most definitive scientific evidence to date confirming the deadly virus was introduced to the hemisphere from the Old World via colonial expansion.

    Smallpox ranks among the most devastating infectious diseases in human history. Before its global eradication in 1980, achieved through decades of widespread vaccination campaigns, the virus killed roughly one in every three people it infected, and left most surviving victims with permanent, disfiguring scarring. Repeated outbreaks ravaged populations across Europe and Asia for centuries, before spreading to the Americas in the wake of Columbus’s 1492 voyage. Historical documents from colonial administrators, missionaries and early settlers already record that the virus killed millions of Indigenous people, who had no prior exposure or built-up immunity to the pathogen. But until now, this narrative has lacked solid molecular confirmation.

    The new research, published Thursday in the journal *Science*, was led by a team of international geneticists and anthropologists. Led by Shigeki Nakagome, a geneticist at Trinity College Dublin, the team analyzed 13 ancient bone samples recovered from an archaeological site in Camarones, a region in northern Chile that has preserved numerous well-preserved pre- and post-contact mummified remains. The team’s sequencing uncovered clear fragments of smallpox viral DNA in the leg bones of two individuals: an adult man and an adult woman.

    Radiocarbon dating and genetic analysis placed the deaths of these two individuals between 1492 and 1632, aligning perfectly with the earliest waves of European colonial expansion into South America. When researchers compared the viral genome recovered from the mummies to other known smallpox strains, it fell evolutionarily between medieval European smallpox variants and later New World strains. This phylogenetic placement confirms that the smallpox circulating in South America shortly after contact descended directly from European lineages.

    Patricia Foster, a biologist at Indiana University who was not involved in the new study, noted that while the broad narrative of smallpox’s introduction via colonization has long been accepted, this research provides the hard genetic proof that settles decades of debate. “Nobody would ever question that smallpox came to this hemisphere from colonization, but this proves it,” Foster said.

    While the study confirms the virus originated in the Old World, it leaves open key questions about exactly how it spread to the remote South American site where the mummies were found. The research team notes that it remains unclear which specific group of colonizers or traders first brought the virus across the Atlantic. It could have been carried by early European settlers exploring the South American coast, or spread indirectly via transatlantic slave trade routes that passed through Africa before reaching the Americas.

    Notably, the Camarones site where the remains were found has no surviving historical records of early smallpox outbreaks, raising new questions about how the virus traveled so far south so quickly. The research team hypothesizes the virus may have spread along long-established Indigenous trade networks that connected communities across the Americas long before the first European settlers arrived, allowing it to reach remote inland and southern populations much faster than previously thought.

    Beyond confirming the origin of the virus, the study also offers new insights into how smallpox evolved over time to become more deadly. Comparing the ancient strain to later variants shows the virus gradually silenced specific genes that allowed it to become more efficient at infecting and killing human hosts.

    The research also puts a human face on the catastrophic demographic collapse that followed colonization. Both of the individuals found to carry smallpox were between 18 and 35 years old, and the disease was almost certainly the cause of their deaths. Constanza de la Fuente Castro, study coauthor and biological anthropologist at the University of Chile, emphasized the findings underscore how the devastation of smallpox reshaped the Americas, wiping out entire Indigenous communities and leaving surviving populations vulnerable to European conquest.

    “This wasn’t just a cultural or demographic shift,” de la Fuente Castro said. “It’s literally written into biological evidence that we can still recover and read today.”

  • New dinosaur discovered in Zimbabwe

    New dinosaur discovered in Zimbabwe

    Paleontologists have uncovered a previously unknown dinosaur species on the shores of Zimbabwe’s Lake Kariba, offering groundbreaking new insight into the early diversification of dinosaurs across southern Africa some 210 million years ago. Dubbed *Musango matusadonaensis*, this new find marks only the fifth distinct dinosaur species ever formally named and documented from Zimbabwe, shining a long-overdue spotlight on a region vastly understudied compared to fossil-rich sites in Europe and North America.

    The specimen dates back to the Late Triassic period, a critical evolutionary era when dinosaurs were first expanding their range across the globe, millions of years before they rose to become Earth’s dominant terrestrial vertebrates in the Jurassic and Cretaceous periods. At the time of *Musango*’s existence, modern-day Zimbabwe sat within the massive supercontinent Gondwana, a landmass that also incorporated what is now South America, India, Australia and Antarctica.

    This international research effort, a collaborative project between teams from the United Kingdom, South Africa and Zimbabwe, has yielded a fossil assemblage including key bones from the dinosaur’s spine, forelimbs and feet. Analysis of these remains confirms the individual was nearly fully grown at the time of its death, at approximately eight years of age, measuring 4.5 meters in length — roughly the size of a medium passenger vehicle.

    *Musango matusadonaensis* is classified as a sauropodomorph, an early ancestral relative of the massive long-necked sauropods that would later evolve, such as *Diplodocus*. Unlike its four-legged descendants, this early species walked on two legs. Researchers also concluded it was an omnivore, feeding on a mixed diet of plants and meat that likely included crocodile-like phytosaurs, lungfish and smaller contemporary dinosaur species.

    Lead study author Professor Paul Barrett of London’s Natural History Museum, whose findings are published in the *Journal of Systematic Palaeontology*, noted that long-standing scientific consensus assumed dinosaur communities across southern Africa were largely homogeneous. “However, these discoveries are showing that this part of the ancient supercontinent Gondwana was actually made of a series of smaller ecosystems — each with a different cast of characters,” Barrett explained. This new find adds crucial data to the sparse fossil record of Late Triassic African dinosaurs, helping paleontologists piece together a more accurate picture of how early dinosaur communities diversified and spread across the globe.

  • Meet the astronomer digging into the Milky Way’s ‘fossils’

    Meet the astronomer digging into the Milky Way’s ‘fossils’

    For decades, Argentine-born astronomer Amina Helmi has dedicated her career to unearthing the hidden origins of the Milky Way, treating ancient stars as cosmic time capsules that hold the keys to our galaxy’s chaotic birth. Now, her groundbreaking work rewriting long-held theories of galactic formation has earned her one of the highest honors in the field: the prestigious Kavli Prize, often referred to as the Nobel Prize of astrophysics.

    At 55, Helmi is a professor at the University of Groningen in the northern Netherlands, where her passion for the Milky Way is impossible to miss in her compact office. Family snapshots and towering stacks of dense, jargon-heavy academic dissertations share space with a bowl overflowing with Milky Way chocolate bars – a playful, sweet nod to the star system that has consumed her professional life.

    Helmi is a pioneer in galactic archaeology, a specialized subfield that treats stars as “cosmic fossils” to reconstruct the Milky Way’s ancient history and project its long-term trajectory. Unlike the popular image of astronomers hunched over telescopes scanning the night sky, Helmi’s work centers on parsing enormous astronomical datasets, some of which contain more than two billion lines of stellar data.

    “Stars carry chemical fingerprints that act just like DNA,” Helmi explained in an exclusive interview with AFP. “These chemical compositions preserve irreplaceable information about where a star formed and what environment it originated in, letting us trace billions of years of galactic history.”

    A transformative turning point for Helmi’s research came from the European Space Agency’s Gaia mission, an ambitious project to map the Milky Way in three dimensions, to which Helmi herself contributed. “Gaia measured the motion of nearly 1.5 billion stars across a far larger volume of space than any previous mission,” she noted. “It wasn’t just the sheer number of stars we were able to track – it was the unprecedented accuracy of those motion measurements that changed everything for our field.”

    Armed with Gaia’s unprecedented dataset, Helmi and her collaborators pieced together a cataclysmic event that reshaped the Milky Way forever some 10 billion years ago – hundreds of millions of years before our own Sun formed. At that time, a small dwarf galaxy named Gaia-Enceladus collided and merged with the young proto-Milky Way. The leftover stars from the crashed dwarf now form the diffuse halo that wraps around our galaxy, and the collision triggered a wave of new star formation that created the Milky Way’s signature “puffed up” galactic disk.

    This discovery upended the long-standing scientific consensus that the Milky Way formed through slow, steady, continuous growth. Instead, Helmi’s work confirmed that our galaxy assembled itself incrementally through a series of violent collisions and mergers with smaller cosmic bodies, a process called hierarchical accretion.

    Helmi shares the 2024 Kavli Prize in Astrophysics with two fellow researchers: Vasily Belokurov of the University of Cambridge and Rodrigo Ibata of the University of Strasbourg. The three scientists will split the $1 million prize fund, receive a gold medal, and be honored at a formal ceremony hosted by the Norwegian Academy of Science and Letters in Oslo this coming September. The award committee recognized the trio for “uncovering the fossil evidence of past mergers proving that the Milky Way galaxy was built through hierarchical accretion.”

    Helmi told AFP she was completely stunned when she received the news of the award. “I was totally speechless. To me, this is the biggest honor there is in our field – it’s just absolutely unbelievable,” she said. “This is also wonderful recognition for galactic archaeology as a whole. It’s a relatively young field, but it’s exploded in growth over the last decade, and this award puts that work on the map.”

    Looking ahead, Helmi plans to continue diving into new data releases from the Gaia mission, while developing more robust statistical models to process the field’s increasingly massive datasets. When asked what the Milky Way’s violent youth means for its future, she offered a reassuring take: “Nothing major has happened to our galaxy since that early collision. You could say it had a wild, turbulent youth, and now it’s enjoying a quiet, restful adulthood.”

  • How to watch Australia’s spectacular ‘buck moon’ light up the night sky

    How to watch Australia’s spectacular ‘buck moon’ light up the night sky

    Astronomy enthusiasts across Australia are gearing up for a rare celestial treat this week, as a distinctive full buck moon — classified as a micro moon that will outshine two active meteor showers — prepares to light up southern hemisphere skies this Thursday.

    This July full moon carries unique orbital characteristics that set it apart from other full lunar events in 2024. Unlike supermoons that occur when a full moon aligns with its closest approach to Earth, this full moon coincides nearly with apogee, the farthest point in the moon’s elliptical orbit around our planet. This positioning makes it a micro moon, and it will also reach the second-highest peak in the night sky of any full moon this year, a quirk of its seasonal alignment.

    Visibility timelines vary slightly across Australia’s southern and eastern states, with the micro moon set to become visible from approximately 4:45 pm AEST in Tasmania, the Australian Capital Territory, Victoria and New South Wales. Dr. Laura Driessen, a postdoctoral researcher and science communicator at the Sydney Institute for Astronomy, shared key insights to help stargazers maximize their viewing experience.

    “The moon’s orbit around Earth is not a perfect circle — it’s slightly oval, so the farthest point from our planet is called apogee,” Driessen explained. “This is a full moon that occurs when the moon is at its most distant from Earth, creating the micro moon effect.”

    Driessen noted that the buck moon’s intense brightness will overpower the faint streaks of two meteor showers active this week, making the lunar event the main attraction for skywatchers. For optimal viewing, she recommends that enthusiasts travel away from the bright artificial light pollution of major urban centers to darker, open rural areas. “A clear night sky is the biggest factor for good viewing,” she said. “In Australian winter, the air tends to be drier than in other seasons, which actually works in our favor, creating crisper, clearer viewing conditions.”

    The name “buck moon” has its origins in Indigenous North American naming traditions, coined to mark the time of year when young male deer begin growing new antlers. Though the name originated on the other side of the globe, it has been widely adopted in modern astronomy calendars used by Australian skywatchers. After this week’s event, the next full moon will peak in late August, and it will carry the name Sturgeon Moon, another traditional North American naming convention tied to seasonal fishing patterns.

  • The future of the UK’s renowned Lovell radio telescope is in question after a funding cut

    The future of the UK’s renowned Lovell radio telescope is in question after a funding cut

    LONDON – A landmark decision to end public funding for one of the world’s most historic and celebrated radio telescopes has triggered widespread outrage and deep concern across the global scientific community. The Lovell Telescope, the centerpiece of the Jodrell Bank Observatory – a UNESCO World Heritage Site located in northwest England that has pushed forward the boundaries of cosmic exploration for nearly seven decades – will lose all government backing after 2028, according to an official announcement.

    U.K. Research and Innovation (UKRI), the government’s public funding body for research and innovation, revealed the funding change Monday. The 76-meter-wide Lovell Telescope, a recognizable regional landmark that has stood since the 1950s, is a core component of e-Merlin, a national network of seven interconnected radio telescopes managed by the University of Manchester’s Jodrell Bank Centre for Astrophysics, south of Manchester.

    In its statement, UKRI justified the cut by saying the decision came out of “a rigorous prioritization process to focus investment on the areas that will deliver the greatest long-term scientific capability, impact and value for the U.K.” Public funding for the entire e-Merlin array will cease at the end of March 2028.

    Leading figures from the British and international scientific community have quickly pushed back against the decision, warning that the cuts will cause irreversible damage to the U.K.’s standing in global astronomy research. Renowned particle physicist and broadcaster Brian Cox, based at the University of Manchester, described the funding cut as “devastating and irreversible.”

    Paul Howarth, president of the U.K.’s Institute of Physics, called the latest cuts to physics funding that include Jodrell Bank “a terrible blow to the scientific community.” He has called on newly appointed Prime Minister Andy Burnham to reverse the decision, warning that the choice undermines Britain’s global reputation as a leading destination for scientific research, discovery and innovation.

    “For the sake of U.K. physics and our national reputation as a place to do science, conduct research and innovate, we would urge the new government to review this ruinous set of decisions,” Howarth said.

    The University of Manchester, which oversees operations of the e-Merlin network and the Lovell Telescope, has confirmed it is currently pursuing alternative funding from private businesses, philanthropic organizations, and potential new government grants to save the facility. However, university leaders have made clear that without securing alternative backing, the telescope will cease to operate as an active scientific research instrument after 2028.

    Sarah Sharples, the university’s dean of science and engineering, told reporters: “But, if we don’t find those alternative sources of funding, then there is a risk that as of the end of March 2028, the Lovell Telescope will not be an actively functioning scientific facility for radio astronomy.”

    Completed in 1957, the same year the Soviet Union launched Sputnik, the first artificial satellite to orbit Earth, the Lovell Telescope has cemented its place as a trailblazer in global radio astronomy, a field that studies distant cosmic objects through the radio waves they emit. The telescope made history within months of opening by tracking the path of Sputnik as it orbited the planet, a feat that put Jodrell Bank on the global map. In the decades that followed, it received the first transmitted images from the lunar surface in 1966 during the early era of space exploration, and has enabled groundbreaking discoveries of distant galaxies, while advancing scientific understanding of black holes, quasars, pulsars and gravitational lenses.

    During the Cold War, the telescope also served a critical national security role, operating as an early-warning system to detect incoming Soviet intercontinental ballistic missiles. The site’s public engagement center, which welcomes thousands of visitors and school groups annually to learn about astronomy and space science, will not be impacted by the funding cuts.

  • Gunther von Hagens, the German anatomist behind the ‘Body Worlds’ exhibition, dies at 81

    Gunther von Hagens, the German anatomist behind the ‘Body Worlds’ exhibition, dies at 81

    Legendary German anatomist Gunther von Hagens, the polarizing innovator whose traveling ‘Body Worlds’ exhibits of plastinated human bodies sparked global fascination, fierce ethical debate and shifted public understanding of human anatomy, has passed away at the age of 81. His family and the Institute for Plastination, the research organization he founded, confirmed that von Hagens died on Friday, with no additional details about his death provided in the official statement released Monday. The anatomist had publicly disclosed a Parkinson’s disease diagnosis in 2010, having lived with the condition for more than a decade.

    At the core of von Hagens’ decades-long career was his revolutionary development of the plastination technique, a preservation method he began refining in the 1970s. The process replaces natural bodily fluids with curable liquid plastic that hardens over time, stopping tissue decomposition while preserving the full structure of organs and cells. This breakthrough allowed von Hagens to create lifelike, durable displays of human bodies that brought internal anatomy out of medical school laboratories and into public view.

    The first ‘Body Worlds’ exhibition launched in Japan in 1995, marking the start of a global cultural phenomenon. Two years later, the show opened in von Hagens’ native Germany, overcoming fierce opposition from religious leaders who tried to block the exhibit on the grounds that it disrespected the human dignity of the deceased. Defending his work, von Hagens emphasized that his goal was not to shock, but to educate the public: by seeing real human anatomy up close, everyday people could better understand how their own bodies function. “I touch here a taboo, which is our body, and nothing is so near as our body is to us,” he once said of his work, arguing that his exhibits forced necessary conversations about long-held cultural taboos surrounding death and the human form.

    All bodies displayed in ‘Body Worlds’ are donated by individuals who explicitly agreed to give their bodies for public education and plastination. Even so, von Hagens faced persistent criticism from religious leaders and medical ethicists who accused him of crossing into sensationalism. Controversial displays — including a plastinated corpse posed riding a horse, and a pregnant donor preserving her eight-month fetus — drew particular condemnation. When the exhibit opened in Berlin in 2001, the Reverend Ernst Pulsfort of Berlin’s Catholic Academy argued von Hagens “plays with the corpses like a child plays with dolls,” claiming the show catered only to public curiosity for shock rather than genuine education.

    Von Hagens doubled down on his unapologetic approach in 2002, when he conducted Britain’s first public autopsy in 170 years during a ‘Body Worlds’ run in London. Wearing his signature black fedora, the anatomist performed the procedure before a sold-out crowd of hundreds, ignoring official government warnings that the act violated public health rules. He called the event a “huge success,” while the head of ethics for the British Medical Association, Dr. Michael Wilkes, condemned it as “degrading and disrespectful.”

    After making its United States debut in Los Angeles in 2004, ‘Body Worlds’ went on to tour dozens of major cities across the country, drawing millions of visitors. In 2006, von Hagens opened the Plastinarium, his purpose-built facility for plastination work, in the eastern German town of Guben.

    Born Gunther Liebchen on January 10, 1945, in what is now western Poland, von Hagens’ early life was shaped by Cold War division. He began medical school in Jena, East Germany, but grew disillusioned with the communist regime and attempted to escape to West Germany. The attempt failed, and he was imprisoned before West Germany purchased his release in 1970, a common practice for political detainees during that era. He resumed his medical studies at the University of Luebeck, and later joined the pathology and anatomy institute at Heidelberg University in the 1970s, where he began his pioneering work on preservation. He adopted the surname von Hagens from his first wife Cornelia, a former classmate, and went on to have three children with her. His second wife, Angelina Whalley, currently leads the Institute for Plastination in Heidelberg and curates the ‘Body Worlds’ exhibitions.

    In accordance with his long-stated wishes, von Hagens’ own body will undergo plastination following his death, the Monday statement confirmed, adding that his family will honor and carry out this request.

  • China’s Fields Medals triumph raises bigger math questions

    China’s Fields Medals triumph raises bigger math questions

    On July 23, 2026, a historic milestone unfolded at the International Congress of Mathematicians hosted in Philadelphia: Hong Wang and Yu Deng became the first citizens of the People’s Republic of China to claim the Fields Medal, the 90-year-old highest honor in the field of mathematics. Beyond this groundbreaking first, Wang added a second layer of history to the moment, joining just two other women — Maryam Mirzakhani and Maryna Viazovska — to ever receive the award.

    While this achievement is universally celebrated, it opens a far more nuanced question that neither nationalist triumphalism nor dismissive skepticism can answer: what exactly does the Fields Medal measure? The answer is far from a real-time snapshot of any nation’s current scientific policy. Like light emitted from distant stars, awards in fundamental science reach audiences long after the work that earned them was set in motion. Any government that interprets this year’s win as an up-to-date grade for its latest research strategy is misreading the signal entirely.

    Many observers default to framing the Fields Medal as a national scoreboard, but the career trajectories of Wang and Deng defy this simplistic framing. Both mathematicians enrolled at Peking University as part of the 2007 incoming cohort, but their paths quickly extended beyond China’s borders. Wang pursued graduate study in France before completing her doctorate at the Massachusetts Institute of Technology, while Deng transferred to MIT in 2009 and earned his PhD at Princeton University. Today, Wang holds dual academic appointments at New York University and France’s Institut des Hautes Études Scientifiques, and Deng is a faculty member at the University of Chicago. Even French President Emmanuel Macron highlighted Wang’s cross-border career when he called to congratulate her, using her story to promote France as a global hub for scientific talent. In truth, three or four different nations could justifiably claim a stake in this pair of historic achievements.

    This transnational footprint is no accident — it is the core structure of elite modern scientific discovery. The foundational phase of talent development: the rigorous K-12 schooling, competitive problem-solving circuits, and intensive undergraduate training that cultivates researchers capable of tackling century-old unsolved problems, is largely rooted in national systems and takes roughly two decades to complete. But the phase where talent truly flourishes — access to world-class mentors, collaborative seminar cultures, and institutional tolerance for a decade of apparent unproductivity — is an increasingly transnational process, shaped by global research networks. In the case of Wang and Deng, China laid the exceptional foundational groundwork, while specialized research institutions across three countries created the conditions for their breakthroughs. Neither phase alone could have produced a Fields Medal-worthy result.

    Digging deeper into this story reveals a broader lesson that applies to research systems across the globe. For decades, China dominated the International Mathematical Olympiad, the premier high school competition, but failed to produce a Fields Medalist — and that gap held clear lessons. Olympiad success rewards quick problem-solving on questions that are already known to be solvable within a tight four-hour window. Cutting-edge mathematical research demands the exact opposite mindset: the patience to commit to a problem that could take a decade to solve, or may never yield an answer at all.

    Wang and her collaborator Joshua Zahl ultimately resolved a century-old open question first posed by Soichi Kakeya in 1917. Deng, working with co-researchers Zaher Hani and Xiao Ma, closed out a long-standing formulation of one of David Hilbert’s famous 1900 list of 23 unsolved mathematical problems. Few modern research metrics and evaluation systems are designed to reward work that unfolds on this multi-decade timeline.

    This is the widely transferable insight from the 2026 awards, and it challenges more research systems than it praises. Research funding bureaucracies across Asia, Europe, and North America have increasingly converged on short performance review cycles, overreliance on publication counts, and rigid near-term deliverable requirements. Very few of these systems successfully protect the long time horizons that ground-breaking fundamental work requires. In this light, the Fields Medals stand as a quiet but powerful argument for patient investment in science — the very kind of long-horizon funding that most public and private funders have steadily retreated from in recent years.

    Within hours of the medal announcement, two competing national anxieties emerged, both of which miss the core point of the achievement. On Chinese social media, users questioned why the nation’s top undergraduate students leave to pursue graduate study and careers abroad. In Washington D.C., the same win was framed as evidence of American scientific decline. Both readings treat leading mathematicians as national assets in a zero-sum global competition, a framing that ignores how modern mathematical discovery actually works.

    This zero-sum framing is fundamentally incorrect, and the breakthroughs themselves prove it. Wang’s landmark result was completed in collaboration with a researcher at the University of British Columbia, while Deng’s work relied on partnerships with scholars based at the University of Michigan. Once a mathematical theorem is published, it becomes a permanent global public good: it is non-rival, meaning one researcher’s use does not diminish another’s, and non-excludable, available to any graduate student in Lagos or Lahore the moment it is posted to the open access preprint server arXiv. The real downstream impact of work like the Kakeya conjecture resolution, which underpins advances in harmonic analysis, wave propagation, signal analysis, and medical imaging, accrues to any researcher who chooses to build on it, regardless of what passport they hold.

    If there is a meaningful policy lesson to draw from this year’s awards, it does not center on which nation can claim a win. Instead, it asks whether the cross-border pipeline that produced these two winners can survive growing geopolitical pressure. That pipeline depended on unimpeded academic mobility: Chinese undergraduates gaining seamless access to top American doctoral programs, French research institutions hiring the best global talent regardless of nationality, and collaborative teams forming freely across national borders. Today, as governments increasingly sort researchers by nationality and perceived security risk, that open pipeline is growing far harder to sustain. Gradually, the free circulation of talent is being replaced by rigid sorting along national lines.

    This shift carries a steep potential cost. The 2026 Fields Medals are the product of an open, interconnected global research system. It is reasonable to ask whether a more closed, fragmented system will be able to produce similarly groundbreaking results when the next International Congress of Mathematicians meets in 2030.

    The awards also arrive at a moment of growing debate over artificial intelligence’s role in mathematical discovery, reinforcing a key truth: greater computational power does not eliminate the need for human judgment to identify which problems are worth devoting years, even decades, of work to.

    Ultimately, the most honest reading of the 2026 Fields Medal ceremony in Philadelphia is not a story of one nation’s ascendance nor another’s decline. It is a reminder that mathematics remains one of the few truly borderless human enterprises, and its greatest breakthroughs still emerge only from systems brave enough to fund a hard question for a century and wait for an answer.

  • A US-Russian space crew lands safely in Kazakhstan after an 8-month stint on the ISS

    A US-Russian space crew lands safely in Kazakhstan after an 8-month stint on the ISS

    After an eight-month stay aboard the International Space Station (ISS), a joint U.S.-Russian space mission has concluded with a successful, safe landing on the sun-baked steppes of Kazakhstan, marking another milestone in decades of continued orbital cooperation between the two nations. NASA astronaut Chris Williams and Roscosmos cosmonauts Sergei Kud-Sverchkov and Sergei Mikaev touched down aboard their Soyuz MS-28 capsule Sunday, with the craft settling gently into a pre-designated landing zone southeast of the central Kazakh city of Dzhezkazgan, slowed by a large stabilizing parachute.

    For two of the three crew members, the 241-day orbital tour marked their first ever venture into space. Williams, the mission’s NASA representative, and Mikaev, one of the two Russian crew members, had never completed a long-duration spaceflight prior to this expedition, while Kud-Sverchkov was making his second visit to the orbiting outpost.

    Following the landing, recovery teams will airlift the crew by helicopter to the larger Kazakh city of Karaganda for initial post-landing medical checks and processing. From there, Williams will board a NASA charter flight bound for the Johnson Space Center in Houston, Texas, where he will reunite with family and undergo further post-mission debriefing and observation. The two Russian cosmonauts will return to their training facility at Star City, located just outside Moscow, to complete their own reintegration and post-flight procedures.

    The successful landing comes amid a unique geopolitical context for U.S.-Russian space collaboration. Once locked in a high-stakes Cold War space race that defined decades of global technological competition, the two nations have partnered on ISS operations and related space exploration projects for decades. While bilateral diplomatic relations deteriorated sharply following Russia’s 2022 full-scale military incursion into Ukraine, space cooperation has remained one of the few areas where the two powers have maintained consistent, uninterrupted work. To date, U.S. and Russian crews continue to rotate through the ISS, hitching rides on each nation’s crewed spacecraft to reach the orbital laboratory.

    The departing crew’s homecoming coincides with the arrival of their replacements, who began their own eight-month ISS mission last month. On July 14, NASA astronaut Anil Menon and Roscosmos cosmonauts Pyotr Dubrov and Anna Kikina launched from the Russia-leased Baikonur Cosmodrome in Kazakhstan, docking successfully with the station shortly after to start their tour. Notably, the launch was attended by NASA Administrator Jared Isaacman, marking the first time a sitting NASA chief has visited the Baikonur launch site in eight years, a move that many observers see as a signal of continued commitment to bilateral space cooperation despite broader geopolitical friction.

    Menon, Dubrov and Kikina have now joined the Expedition 75 cadre aboard the ISS, alongside NASA astronauts Jessica Meir and Jack Hathaway, European Space Agency astronaut Sophie Adenot, and Roscosmos cosmonaut Andrei Fedyaev, as the team continues critical scientific research and maintenance operations on the orbiting platform.

  • Pompeii archaeologists reconstruct frescoed ceiling of a banquet hall, with more fragments to come

    Pompeii archaeologists reconstruct frescoed ceiling of a banquet hall, with more fragments to come

    ROME – One of the world’s most iconic archaeological sites, the ancient Roman city of Pompeii, has revealed a remarkable new cultural artifact: a partially reconstructed vaulted ceiling covered in intricate frescoes, decorated with vivid depictions of figures from classical Greek mythology. Pompeii, famously frozen in time when Mount Vesuvius erupted catastrophically in 79 AD, has yielded countless treasures over centuries of excavation, and this new discovery adds another extraordinary layer to our understanding of daily life in the ancient city. The finished partial reconstruction was presented to the public this Thursday, marking the conclusion of an international workshop focused on cutting-edge new findings and modern restoration practices at the UNESCO World Heritage Site. Drawing more than 2.5 million visitors annually, Pompeii remains Italy’s one of the most popular tourist destinations, making new archaeological developments there closely watched by both the global heritage community and cultural travel sectors. Officials from the Pompeii Archaeological Park announced further details of the project in an official statement released Friday. According to park authorities, the restored ceiling is thought to have originally decorated a large banquet hall on the upper floor of a residential villa, which also included an adjacent commercial bakery on the premises. Unlike traditional static restoration methods, the project team employed a groundbreaking modular approach to reconstruct the curved vault. Experts first built a custom curved supporting structure that matches the original curvature of the ancient ceiling, then fitted all recovered and restored fresco fragments into their correct positions on the frame to recreate the original layout. A key advantage of this innovative system is its flexibility: as additional fresco fragments are uncovered in future excavations and undergo restoration, they can be seamlessly added to the existing reconstruction, gradually completing the full artwork over time. Following careful analysis of the recovered imagery, archaeologists have confirmed that the central narrative theme of the ceiling frescoes centers on the mythic pairing of Dionysus, the Greek god of wine, celebration and feasting, and Ariadne, the Cretan princess famous for her role in the myth of the Minotaur. The union of Dionysus and Ariadne is one of the most enduring and widely depicted myths in classical Greco-Roman art, making it a fitting decorative theme for a space used for grand social banquets in ancient Pompeii. This project not only preserves a fragile piece of ancient art for future study but also demonstrates how modern innovative techniques are transforming the way archaeologists recover and display artifacts from this unique site.