分类: science

  • Nasa astronauts begin ‘bittersweet’ medical evacuation from space station

    Nasa astronauts begin ‘bittersweet’ medical evacuation from space station

    In an unprecedented event in space exploration history, NASA’s Crew 11 has initiated an early return from the International Space Station due to medical concerns involving one crew member. This marks the first medical evacuation since the ISS commenced orbital operations in 1998.

    The four-person team—comprising NASA astronauts Mike Fincke and Zena Cardman, Japan’s Kimiya Yui, and Russian cosmonaut Oleg Platonov—undocked from the station months ahead of their scheduled mid-February return. They are projected to splash down near California’s coastline in the early hours of Thursday local time.

    While NASA confirmed the affected crew member remains in stable condition, the agency maintained confidentiality regarding both the individual’s identity and specific medical details. The situation developed rapidly following last week’s abrupt cancellation of a scheduled spacewalk by Fincke and Cardman, which preceded NASA’s announcement of a crew health emergency.

    Command of the orbital laboratory has been transferred to Russian cosmonaut Sergey Kud-Sverchkov, who now leads a skeleton crew of three astronauts—including NASA’s Chris Williams and cosmonaut Sergei Mikaev—until reinforcements arrive in February. Despite operational challenges, Kud-Sverchkov affirmed the remaining team’s commitment to maintaining scientific and maintenance operations.

    This incident highlights the inherent medical vulnerabilities of space missions. Although ISS astronauts receive extensive medical training and the station carries emergency equipment, it operates without onboard physician support. The early departure necessitates scaling back research activities aboard the $150 billion facility, which orbits Earth at 17,500 mph while conducting vital microgravity studies.

    Historical context reveals only two comparable medical evacuations in space history: Soviet cosmonaut Vladimir Vasyutin’s 1985 early return from Salyut 7 due to urological complications, and Aleksandr Laveykin’s 1987 departure from Mir station following cardiac arrhythmia. Space experts emphasize that as human presence expands toward lunar and Martian exploration, incorporating medical professionals into crews will become increasingly critical.

  • Nobel laureate Paul Nurse inspires Chinese students in Beijing lecture

    Nobel laureate Paul Nurse inspires Chinese students in Beijing lecture

    In a captivating lecture at the University of Chinese Academy of Sciences, Nobel Prize-winning scientist Sir Paul Nurse inspired a new generation of researchers during his Beijing address on Tuesday. The renowned geneticist and President of Britain’s Royal Society engaged with over 300 students from China and abroad, delivering profound insights into the fundamental nature of life itself.

    Dr. Nurse, who received the 2001 Nobel Prize in Physiology or Medicine for his discoveries of protein molecules that control cell division, framed his presentation around historical scientific pioneers. He illuminated key biological concepts through the groundbreaking work of Gregor Mendel, the father of modern genetics, and Charles Darwin, architect of evolutionary theory through natural selection.

    The distinguished scientist presented life as an extraordinarily complex information system that transcends mere chemical and physical processes. He emphasized that all terrestrial life shares a common ancestral origin, having evolved through meticulous natural selection processes over millennia.

    During the interactive session, Nurse particularly highlighted the critical role young researchers play in advancing scientific frontiers. When addressing questions about unsolved scientific challenges, he redirected inquiry toward the audience, stating: ‘I would ask people like you rather than people like me for the answer to that question… because that’s where the answers are coming from.’

    The British scientist expressed strong interest in fostering collaborative ties between Chinese and UK research communities, specifically mentioning potential partnerships in his specialized field of cell reproduction research. The event served as both an educational masterclass and a bridge-building initiative in international scientific cooperation.

  • Two ancient chariots unearthed outside Emperor Qinshihuang’s Mausoleum

    Two ancient chariots unearthed outside Emperor Qinshihuang’s Mausoleum

    In a significant archaeological breakthrough, researchers excavating the perimeter of Emperor Qin Shi Huang’s mausoleum in Shaanxi province have uncovered two ancient ceremonial chariots devoid of wheels. The discovery emerged during a 2025 excavation project covering 30 square meters within Pit No. 2 at the renowned mausoleum site museum.

    The excavation team, led by project director Zhu Sihong from the Emperor Qinshihuang’s Mausoleum Site Museum, revealed that the finding represents the first confirmed instance of wheel-less chariot burial in this section of the archaeological complex. Alongside the chariots, archaeologists recovered 15 pieces of sophisticated chariot and horse gear alongside nine ancient weapons.

    According to Zhu, the absence of wheels suggests these vehicles served a symbolic rather than practical purpose within the emperor’s subterranean army. This discovery provides new insights into the funerary practices and spiritual beliefs of the Qin Dynasty (221 BC-207 BC).

    Pit No. 2, spanning approximately 6,000 square meters, is believed to contain over 1,300 terracotta figures including charioteers, cavalry units, and both kneeling and standing archers. Many of the best-preserved painted terracotta artifacts discovered to date originate from this section of the burial complex.

    The Terracotta Army, first unearthed in 1974, represents one of the most significant archaeological discoveries of the 20th century. Commissioned by China’s first emperor to accompany him in the afterlife, the site gained UNESCO World Heritage status in 1987. To date, thousands of life-sized clay soldiers and extensive weaponry have been recovered from three primary pits surrounding the main tomb, offering unprecedented understanding of Qin Dynasty military organization, artistic achievement, and social structure.

  • As global warming melts glaciers, a novel sanctuary in Antarctica is opening to preserve ice samples

    As global warming melts glaciers, a novel sanctuary in Antarctica is opening to preserve ice samples

    ROME (AP) — In a landmark initiative to combat the irreversible loss of glacial archives, scientists have established the world’s first international repository for mountain ice cores within Antarctica’s frozen depths. This pioneering preservation effort aims to safeguard invaluable atmospheric history for future generations as climate change accelerates glacial melt worldwide.

    Ice cores function as natural time capsules, encapsulating millennia of Earth’s atmospheric composition within their frozen layers. With glaciers vanishing at unprecedented rates, researchers have initiated an urgent global mission to extract and preserve these climatic records before they permanently disappear.

    The inaugural shipment, containing 1.7 tons of meticulously preserved ice cores from Mont Blanc in France and Grand Combin in Switzerland, recently completed a 50-day refrigerated voyage aboard an icebreaker from Trieste, Italy. These foundational samples now reside in a specialized snow cave at Antarctica’s Concordia research station, maintained at a constant -52°C (-61°F) to ensure perpetual preservation.

    The Ice Memory Foundation—a consortium of European research institutions including France’s National Centre for Scientific Research, Italy’s National Research Council, and Switzerland’s Paul Scherrer Institute—officially inaugurated the frozen archive on Wednesday. Since its 2015 launch, the project has identified ten critical glacier sites worldwide for core extraction and future transportation to the Antarctic sanctuary.

    Professor Carlo Barbante, vice chair of the Ice Memory Foundation and professor at Ca’ Foscari University in Venice, emphasized the project’s significance: “By preserving physical samples of atmospheric gases, aerosols, pollutants and dust trapped in ice strata, we ensure future researchers can study past climate conditions using technologies not yet developed.”

    Scientific data reveals the alarming scale of glacial loss: since 2000, glaciers have diminished between 2% and 39% regionally, with approximately 5% of global glacial ice already vanished. This degradation threatens to erase irreplaceable atmospheric records crucial for understanding climate dynamics.

    Celeste Saulo, Secretary-General of the U.N. World Meteorological Organisation, characterized the preserved cores as “critical reference points rather than mere relics” that will enable scientists across generations to comprehend the pace, scale, and mechanisms of environmental transformation.

    The foundation’s decade-long vision includes establishing an international convention to guarantee permanent protection and accessibility of these frozen archives for future scientific inquiry, creating an enduring legacy of Earth’s climatic history amidst rapid environmental change.

  • Fossils reveal UAE’s lush grasslands, giant rivers from millions of years ago

    Fossils reveal UAE’s lush grasslands, giant rivers from millions of years ago

    The Natural History Museum Abu Dhabi is transporting visitors through 13.8 billion years of Earth’s history, with its most compelling exhibits revealing a startling transformation in the United Arab Emirates’ landscape. Fossil evidence demonstrates that the region now characterized by golden sand dunes and rocky mountains once hosted vast savannahs, grasslands, and massive river systems teeming with diverse wildlife.

    According to Dr. Mark Jonathan Beech, acting geoscience section head at the museum, discoveries in Al Dhafra present incontrovertible evidence that Arabia was not always desert terrain. “Few would imagine Abu Dhabi’s western region once featured giant rivers, savannahs, grasslands, and trees,” Beech stated, noting that these fossils completely reshape our understanding of the region’s ecological history.

    The geological timeline reveals even more dramatic changes. Approximately 100 million years ago, the UAE was submerged underwater, with marine remains still being discovered in mountain regions including Sharjah. The Hajar mountains formed mainly between 95-70 million years ago, with subsequent uplift events shaping Jebel Hafit as recently as 25-15 million years ago.

    By 7 million years ago, Al Dhafra supported extensive river ecosystems that sustained elephants, giraffes, antelopes, crocodiles, turtles, and catfish. “It was like being on safari in East Africa,” Beech remarked, emphasizing the remarkable biodiversity that once flourished in what is now desert.

    These fossil records provide more than historical curiosity—they serve as direct evidence of climate change and its devastating impact on species survival. “It shows that when the climate changes, animals become extinct,” Beech explained, highlighting the instructional value of paleontological findings for understanding contemporary environmental challenges.

    The museum utilizes various visual tools, including climate spirals and an Arabia Climate journey, to illustrate climatic oscillations across millennia while documenting the accelerating global warming trend of the past 150-200 years.

    Reflecting on the institution’s broader mission, Beech emphasized: “Our goal is to educate people to become better ambassadors of the future. We need to care for our planet and nature.” The museum’s fossil collections thus serve dual purposes—illuminating a forgotten green past while providing crucial insights for addressing current environmental crises.

  • When does the Nasa Moon mission launch and who are the Artemis II crew?

    When does the Nasa Moon mission launch and who are the Artemis II crew?

    NASA is preparing to launch humanity’s first crewed lunar mission in over half a century as early as February 6th, 2026. The Artemis II expedition represents a monumental leap in space exploration, aiming to send astronauts farther into space than any previous human mission.

    The space agency’s ambitious timeline begins with the meticulous rollout of its colossal Space Launch System (SLS) rocket and Orion spacecraft from the Vehicle Assembly Building to Launch Pad 39B. This four-mile journey aboard the crawler-transporter-2, scheduled for January 17th, will require up to twelve hours. Following placement, engineers will initiate comprehensive pad preparations, establishing critical connections for electrical systems, fuel environmental controls, and cryogenic propellant feeds.

    A crucial wet dress rehearsal scheduled for late January will test the rocket’s fueling procedures. Should technical issues emerge, NASA may return the spacecraft to the VAB for additional work. If all systems perform optimally, the mission will target one of multiple launch windows in February, March, or April 2026, carefully synchronized with lunar orbital mechanics.

    The diverse four-member crew comprises NASA astronauts Reid Wiseman (commander), Victor Glover (pilot), and Christina Koch (mission specialist), alongside Canadian Space Agency astronaut Jeremy Hansen. Their ten-day journey will mark the inaugural crewed flight of both SLS and Orion, featuring extensive testing of spacecraft systems beyond Earth orbit.

    Artemis II serves as the critical precursor to Artemis III, which aims to land astronauts on the lunar surface no earlier than 2027-2028. The mission faces several unresolved elements, including the final selection of a lunar lander—either SpaceX’s Starship or Blue Origin’s craft—and the completion of new Axiom spacesuits.

    This renewed lunar initiative contrasts sharply with the Apollo program’s Cold War motivations. Artemis embodies an international effort focused on establishing sustainable human presence, with future missions planning construction of the Gateway lunar space station and involving astronauts from Europe and Japan.

    The global space race intensifies as China targets a 2030 south pole landing, Russia discusses lunar ambitions despite technical challenges, and India aims for crewed missions by 2040 following its successful Chandrayaan-3 landing.

  • New strategy to fight cancer developed

    New strategy to fight cancer developed

    A groundbreaking cancer treatment approach that forces malignant cells to reveal themselves to the body’s immune defenses has been developed by Chinese researchers, potentially overcoming the protective mechanisms that enable cancers to proliferate undetected. The innovative strategy, conceptualized as an ‘intratumoral vaccine,’ represents a significant advancement in immuno-oncology research.

    The pioneering work emerged from a collaborative effort between Shenzhen Bay Laboratory and Peking University, spearheaded by principal investigators Chen Peng, Zhang Heng, and Xi Jianzhong. Their research, documented in the January 7 edition of Nature, outlines a sophisticated methodology that simultaneously dismantles cancer cells’ defensive barriers and marks them for immune recognition.

    This novel approach addresses a critical limitation of existing immunotherapies. While current immune checkpoint blockade treatments attempt to release the biological brakes that restrain T-cells—the immune system’s specialized combat units—they frequently prove ineffective because cancers remain exceptionally adept at evasion. Clinical data indicates more than 60% of non-small cell lung cancer patients and over 70% of melanoma patients in China show minimal response to conventional checkpoint inhibitors.

    The newly developed technique leverages the GlueTAC platform, originally established by Chen Peng’s team in 2021 as a generalized system for membrane target elimination. The centerpiece of this breakthrough is the iVAC molecule, which executes two coordinated functions: degrading the PD-L1 protein that cancers employ as an immunological shield, while concurrently delivering viral-antigen markers to tumor cell surfaces.

    This dual-action mechanism essentially tricks the immune system into perceiving cancer cells as virus-infected entities, thereby activating dormant T-cells that already possess viral combat capabilities. The resultant immune response triggers a targeted assault on the identified tumor cells.

    Experimental validation using both animal models and patient-derived organoids—miniature lab-grown human cancer replicas—has demonstrated promising efficacy across multiple cancer types, including colorectal, gastric, and hepatic malignancies. Research teams are currently advancing preparatory work for translational drug development.

    Despite the encouraging results, researchers acknowledge the substantial journey ahead before clinical application. Zhang Heng estimates a three-to-five-year timeline before human trials might commence, noting the considerable financial investment required and inherent uncertainties of medical research. The team maintains an openly collaborative stance, hoping to accelerate development and ultimately benefit cancer patients worldwide.

  • China to launch top-tier international science journal

    China to launch top-tier international science journal

    China is poised to make a significant entry into the global academic publishing arena with the inaugural launch of Vita, a premier international journal dedicated to life sciences and biomedicine. Spearheaded by Westlake University in collaboration with Higher Education Press and the Life Science Open Alliance, this groundbreaking publication is scheduled for its digital debut in early 2026, followed by print issuance in June.

    The journal’s nomenclature, derived from the Latin term for ‘life,’ embodies both its disciplinary focus and commitment to fostering borderless academic collaboration. According to Editor-in-Chief Li Dangsheng, the name reflects the publication’s vision of inclusive scientific discourse that transcends geographical boundaries.

    Extensive preparatory measures are currently underway, including the establishment of an international serial number and formation of an expert advisory committee comprising nearly 100 distinguished scientists from across the globe. The inaugural edition, featuring original research articles currently undergoing final review, represents China’s strategic response to address the disparity between its rapidly advancing research capabilities in life sciences and the development of high-quality domestic publishing platforms.

    Shi Yigong, President of Westlake University, emphasized the critical necessity for China to establish internationally recognized scientific publications that match its growing research prominence. ‘The creation of a world-class scientific journal led by China is not merely necessary but urgently required to complement our nation’s scientific advancement,’ Shi stated.

    The publication will maintain rigorous academic standards through a dedicated professional editorial team, ensuring both the innovativeness and credibility of published research. This initiative marks a significant milestone in China’s broader efforts to enhance its influence within global scientific communities and establish leadership in academic publishing.

  • Scientists bring summer harvests to winter in Xinjiang

    Scientists bring summer harvests to winter in Xinjiang

    In a remarkable display of agricultural innovation, scientists from the Chinese Academy of Sciences have transformed the winter landscape of China’s Taklimakan Desert into a thriving oasis of summer produce. At the forefront of this transformation is Ayimak village in Moyu county, Hotan prefecture, where advanced greenhouse technologies defy the harsh desert winter with vibrant displays of trellised watermelons, plump grapes, and exotic dragon fruits.

    The groundbreaking initiative, part of a rural vitalization project dating back to 2015, has established what local villagers call ‘scientific fields’ – a cluster of technologically advanced greenhouses that have become a regional attraction. According to Wang Shi, the village’s Party committee first secretary, over 40 of the village’s 122 greenhouses are now managed by the CAS project team, providing stable employment for more than 100 villagers with average monthly incomes exceeding 3,000 yuan ($430).

    Wang Xin from the CAS Xinjiang Institute of Ecology and Geography explained the scientific advantages: ‘Compared to traditional open-field planting, our trellised watermelon method allows for higher density, greater yield and superior sunlight exposure. Southern Xinjiang’s abundant sunshine and heat resources provide ideal conditions for protected agriculture, which we’ve enhanced through advanced technology to significantly boost both yield and fruit sweetness.’

    The research team has contracted eight greenhouses for pilot programs, testing various watermelon varieties to identify those best suited to local conditions. Wang Ping, another team member, has introduced over 50 fruit varieties including cherries, winter jujube, and pineapple, carefully selecting those most adaptable to the desert environment.

    Through years of research, scientists have overcome significant challenges including soil salinization, compaction, and sand dust that previously limited fruit cultivation in southern Xinjiang. The project’s success has inspired local involvement, with villager Bayimai Abudouaini noting he has acquired valuable cultivation skills and hopes to rent his own greenhouse in the future.

    The initiative aligns with regional development goals, as Xinjiang had established over 1.2 million protected agriculture units covering more than 44,600 hectares by 2023. According to Chinese Academy of Engineering academician Yu Jingquan, Northwest China’s abundant uncultivated land provides exceptional opportunities for expanding protected agriculture while reducing costs.

    A joint work plan by the Ministry of Agriculture and Rural Affairs and Xinjiang’s regional government projects that protected agriculture in southern Xinjiang will reach an annual output value exceeding 9 billion yuan by 2028, creating employment for over 200,000 rural residents. This scientific achievement demonstrates how technological innovation can transform challenging environments into productive agricultural centers, providing economic opportunities while ensuring food security.

  • Scientist wins ‘Environment Nobel’ for shedding light on hidden fungal networks

    Scientist wins ‘Environment Nobel’ for shedding light on hidden fungal networks

    American evolutionary biologist Dr. Toby Kiers has received the prestigious Tyler Prize for Environmental Achievement—frequently dubbed the ‘Nobel Prize for the environment’—for her groundbreaking research illuminating the complex subterranean networks of mycorrhizal fungi. These vast fungal systems, which form symbiotic relationships with plant roots across global ecosystems, play a critical role in climate regulation by sequestering approximately 13 billion tons of carbon annually.

    Until recently, these intricate underground systems were largely overlooked and underestimated by the scientific community. Dr. Kiers’ pioneering work has transformed our understanding of these networks from mere plant companions to essential biological infrastructure governing nutrient exchange and carbon cycles. Her research has revealed that these fungi function as sophisticated traders in a biological marketplace, strategically allocating phosphorus and nitrogen to plants in exchange for carbon-rich sugars and fats.

    Through the creation of a global Underground Atlas and the development of advanced robotic imaging technology, Dr. Kiers and her colleagues have made these hidden ecosystems visible for the first time. Their mapping efforts have uncovered a concerning reality: most fungal biodiversity hotspots exist outside currently protected ecological zones.

    In response to this finding, Dr. Kiers co-founded the Society for the Protection of Underground Networks (SPUN), which recently launched an ‘Underground Advocates’ program to equip scientists with legal tools for fungal conservation. The Tyler Prize award of $250,000 will further support these conservation initiatives aimed at safeguarding these vital carbon storage systems that have been essential to terrestrial life since plants first colonized land.