分类： science

Paleontologists have identified a colossal new dinosaur species that roamed the terrain of present-day Chongqing approximately 160 million years ago during the Late Jurassic period. The monumental discovery, formally classified as Mamenchisaurus sanjiangensis, was detailed in a groundbreaking study published in the prestigious journal Scientific Reports.

The fossilized remains were originally unearthed in 2015 within Chongqing’s Hechuan district, a region situated at the convergence of the Jialing, Fujiang, and Qujiang rivers—a geographic feature that inspired the species’ nomenclature. With an estimated body length reaching 24 meters, comparable to the dimensions of a modern blue whale, this sauropod represents one of the most substantial dinosaur specimens ever recovered from the municipality.

Research led by Dai Hui of the Chongqing Institute of Paleontology revealed that although the newly identified species shares close phylogenetic relationships with Mamenchisaurus hochuanensis, meticulous analysis of skeletal structures confirmed its distinct taxonomic status. The remarkably preserved fossil assemblage includes an extensive series of cervical, dorsal, and caudal vertebrae, alongside pelvic elements and portions of the left limb.

This significant paleontological breakthrough emerged from the Upper Shaximiao Formation, a stratigraphic layer renowned for yielding numerous iconic Chinese dinosaur discoveries. The excavation and subsequent analysis mark a substantial advancement in Chongqing’s paleontological capabilities, providing crucial insights into sauropod diversification across East Asia during the Jurassic era. Mamenchisaurus sanjiangensis constitutes the eleventh novel dinosaur species identified in China throughout 2024, elevating Chongqing’s confirmed dinosaur species tally to fifteen.

In a revolutionary approach to cancer treatment, researchers at Zhejiang University have successfully transformed mast cells—typically known for triggering allergic responses—into precision weapons against cancerous tumors. This innovative strategy merges targeted immune system activation with advanced drug delivery mechanisms.

The research, published in the prestigious journal Cell, represents a collaboration between Professors Gu Zhen and Yu Jicheng of Zhejiang University and Professor Liu Fujian of China Medical University. Their work focuses on repurposing mast cells, a type of white blood cell traditionally associated with allergic reactions such as hay fever or food sensitivities, into specialized carriers for oncolytic viruses designed to eliminate cancer cells.

The scientific breakthrough involves equipping mast cells with immunoglobulin E (IgE) antibodies specifically engineered to recognize unique protein markers on tumor cells. This biological reprogramming effectively converts these cells into precision-guided vehicles that seek out and infiltrate cancerous growths.

Once these modified mast cells reach their target, they unleash their therapeutic payload through a controlled release mechanism reminiscent of an allergic reaction. This process delivers a concentrated dose of cancer-killing viruses directly to the tumor site while simultaneously activating additional immune defenses, including CD8+ T cells, to join the attack.

In preclinical studies involving mouse models of melanoma, breast cancer, and metastatic lung cancer, the approach demonstrated significant tumor growth suppression and improved survival rates. Notably, in experiments using patient-derived tumor models with elevated HER2 protein levels (common in certain breast cancers), the treatment triggered robust immune responses and substantial tumor reduction.

The platform’s adaptability allows for personalized cancer treatment by tailoring IgE antibodies to target patient-specific tumor proteins. Researchers suggest this mast cell technology could also be adapted to deliver other therapeutic agents, including small-molecule drugs or antibodies.

The research team is currently advancing the technology toward clinical applications, focusing on optimizing production processes, selecting patient-specific IgE antibodies, and exploring combination therapies with existing immunotherapies.

Meteorological authorities warn that eastern and southern regions of China face heightened drought risks throughout winter and into spring 2026 due to persistent La Nina conditions in the equatorial Pacific. While climate experts confirm the unlikely development of a full-scale La Nina event, the existing oceanic cooling pattern continues to disrupt normal precipitation distribution across affected regions.

The National Climate Center’s monitoring data indicates that La Nina conditions became established in October 2025, characterized by unusually cool sea surface temperatures across the central and eastern equatorial Pacific. According to Zhang Daquan, Deputy Director of the center’s climate prediction division, meteorologists utilize the Nino 3.4 index as the standard measurement for such phenomena, with values dropping below -0.5°C indicating La Nina conditions.

Climate scientists emphasize the critical distinction between La Nina conditions and official La Nina events. The latter requires the Nino 3.4 index to remain below the -0.5°C threshold for five consecutive months—a duration not expected in the current scenario. Forecast models project the cooling pattern will persist for two to three months before transitioning toward neutral conditions around February or March 2026.

The meteorological mechanism involves La Nina generating cyclonic circulation anomalies over the western North Pacific and South China Sea. This atmospheric configuration produces prevailing northeasterly winds that impede moisture transport from tropical regions—China’s primary winter vapor source. Consequently, precipitation deficits are anticipated across eastern and southern provinces.

Contrary to public assumptions linking La Nina with severe winter cold, temperature projections indicate near-average or slightly above-average winter temperatures nationwide. Zhang clarified that multiple factors beyond La Nina—including Arctic sea ice coverage, Eurasian snow accumulation, and natural atmospheric variability—collectively influence China’s seasonal climate patterns.

The National Climate Center anticipates increased temperature volatility throughout winter, featuring more pronounced alternations between cold spells and warm periods. This variability occurs alongside the predicted precipitation reduction, creating complex weather challenges for agricultural and water resource management sectors.

A groundbreaking scientific study has revealed the existence of massive primordial water reservoirs located thousands of kilometers beneath the Earth’s surface, fundamentally reshaping our understanding of the planet’s evolutionary journey. Published in the prestigious journal Science, this research provides unprecedented insights into how water became permanently embedded within the Earth’s geological structure during its formative years.

The international research team, led by Professor Du Zhixue from the Guangzhou Institute of Geochemistry, conducted sophisticated simulations replicating the extreme conditions found 660 kilometers underground. Their experiments demonstrated that bridgmanite—the Earth’s most abundant mantle mineral—possesses remarkable water-retention capabilities even at temperatures reaching 4,100°C, far exceeding previous estimates.

This discovery challenges conventional scientific wisdom regarding water distribution deep within our planet. The research indicates that early-retained water played a crucial role in transforming Earth from a molten inferno into the habitable world we know today. During the planet’s fiery youth 4.6 billion years ago, when frequent celestial impacts maintained surface temperatures too extreme for liquid water, substantial amounts of water became captured deep within the mantle as molten rock cooled and crystallized.

The team employed innovative methodologies including laser-generated heat simulations, high-temperature imaging, and atom probe tomography—techniques comparable to providing the microscopic world with ultra high-resolution chemical CT scans. These advanced approaches enabled researchers to visualize water distribution within tiny mineral samples and confirm that water molecules were indeed carried within bridgmanite’s crystalline structure.

According to the findings, the amount of water retained in the early solid mantle may have reached volumes equivalent to 0.08 to 1 times that of all modern oceans combined. This deeply sequestered water acts not as a static reservoir but as a geological lubricant, reducing the melting point and viscosity of molten rock to promote the slow circulation that drives tectonic plate movement and sustains the planet’s evolutionary vitality.

Over immense geological timescales, this deeply embedded water gradually migrated back to the surface through magma movement, contributing to the formation of primordial atmosphere and oceans. The research received support from multiple Chinese scientific institutions including the Chinese Academy of Sciences, the National Natural Science Foundation of China, and the Ministry of Science and Technology.

Stargazers across China were treated to one of nature’s most dazzling celestial displays on Sunday, December 14, 2025, as the annual Geminid meteor shower reached its spectacular peak. The astronomical phenomenon, renowned for its brightness and frequency, painted night skies with streaks of light from the northeastern province of Heilongjiang to various observation points nationwide.

In Yabuli town of Shangzhi city, Heilongjiang province, photographers captured stunning images of the meteor shower against a crisp winter backdrop. The clear atmospheric conditions in many regions provided optimal viewing opportunities for both amateur astronomers and professional observers alike.

The Geminids, unique among meteor showers for originating from asteroid 3200 Phaethon rather than a comet, typically produce up to 120 meteors per hour during peak activity. This year’s display maintained its reputation as one of the most reliable and visually impressive meteor showers of the annual astronomical calendar.

Chinese astronomy enthusiasts and night sky photographers had been anticipating the event for weeks, with many traveling to dark-sky locations away from urban light pollution to witness the phenomenon in its full glory. Social media platforms across China filled with user-shared photographs and videos documenting the celestial spectacle.

The meteor shower’s visibility across much of China demonstrates the country’s growing public interest in astronomical events and the increasing accessibility of stargazing as a popular recreational activity. Local astronomy clubs and educational institutions had organized viewing events to capitalize on the scientific and educational opportunity presented by the natural light show.

The 2025 Global Sustainable Agriculture (GSSA) Forum concluded successfully in Haikou, Hainan Province, establishing a comprehensive framework for international cooperation in climate-smart farming practices. Held December 5-6 under the theme “Sustainable Agriculture for All,” the gathering brought together approximately 150 participants including international organization representatives, agricultural diplomats from over ten nations, researchers, entrepreneurs, and farming practitioners.

The forum’s programming addressed critical challenges including global food security mechanisms, environmental-social-governance (ESG) standards in agriculture, technological innovation deployment, and investment strategies for sustainable development. Sun Xi, founder and secretary-general of the GSSA Forum, emphasized the event’s role in creating practical platforms for global agricultural cooperation while supporting Hainan Free Trade Port’s expanding international functions.

Distinguished speakers included former UN Under-Secretary-General Noeleen Heyzer, who highlighted the urgent need for empowering small-scale and women farmers through technology-enabled efficiency gains and transformed consumption patterns. “Building fair and resilient food markets requires systemic change toward climate-smart agricultural methods,” Heyzer stated during the plenary session.

China Institute for Reform and Development President Chi Fulin presented groundbreaking recommendations for urban-rural integration strategies, proposing increased property income for farmers, industrial integration for modernization, and enhanced rural public services. For Hainan’s specific development, Chi advocated for elevated land valuation, collaborative tropical agricultural bases with Guangdong targeting ASEAN markets, and establishing Hainan as a pivotal marine economy hub in China-ASEAN relations.

The forum officially launched the multidimensional “GSA Ecosystem” comprising five interconnected platforms: forum, club, academy, fund, and alliance. Organizers announced the 2026 forum will convene in April in Hefei, Anhui Province, alongside the International Rural Development Innovation Expo. The event also featured specialized farmer dialogue sessions and four roundtable discussions, followed by December 6 study visits to the Huayang Ocean Research Center and National Institute for South China Sea Studies for exchanges on blue economy governance.