Tag #Science

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german.china.org.cn

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Mar 17, 13:15

Chinese Drone Passes Extreme Cold Weather Test

A Chinese-developed drone powered by a high-energy-density lithium battery successfully completed a flight test at -36°C in China's northernmost city, showcasing a reliable power solution for polar expeditions, border patrols, disaster relief, and logistics in harsh environments.

Chinese Drone Passes Extreme Cold Weather Test

A Chinese-developed drone powered by a high-energy-density lithium battery successfully completed a flight test at -36°C in China's northernmost city, showcasing a reliable power solution for polar expeditions, border patrols, disaster relief, and logistics in harsh environments.

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Industry, Innovation, and Infrastructure

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How did the research team overcome the challenges of using lithium batteries at extremely low temperatures?

The successful test demonstrates advancements in high-performance drone battery technology. The team developed new electrolyte compositions and anode materials to address the significant performance drop of lithium batteries in extremely cold environments. This resulted in a stable power output at -40°C to -50°C, with a less than 10% performance drop at -40°C compared to normal temperatures—significantly better than the industry average of 30-50%.

cnn.com

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Mar 17, 19:16

Four Sub-Earth Exoplanets Discovered Orbiting Barnard's Star

Using the MAROON-X and ESPRESSO instruments, astronomers discovered four sub-Earth exoplanets orbiting Barnard's Star, the nearest single star system to Earth, challenging previous assumptions about planetary formation around red dwarfs and advancing the search for habitable exoplanets.

Four Sub-Earth Exoplanets Discovered Orbiting Barnard's Star

Using the MAROON-X and ESPRESSO instruments, astronomers discovered four sub-Earth exoplanets orbiting Barnard's Star, the nearest single star system to Earth, challenging previous assumptions about planetary formation around red dwarfs and advancing the search for habitable exoplanets.

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What is the significance of discovering four sub-Earth exoplanets orbiting Barnard's Star, the closest single star system to our solar system?

Astronomers using the MAROON-X instrument on the Gemini North telescope and ESPRESSO on the Very Large Telescope have found strong evidence of four sub-Earth exoplanets orbiting Barnard's Star, the nearest single star system to Earth. These planets are significantly smaller than Earth, ranging from 19% to 34% of Earth's mass, and orbit very closely to their star, resulting in surface temperatures too hot to support life. This discovery was published March 11 in The Astrophysical Journal Letters.

kathimerini.gr

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Mar 17, 22:12

Greece to Experience Record Temperature Drop, Heavy Weather

Greece's weather will drastically change this week, dropping as much as 20°C in some areas from unusually high temperatures last week, with heavy rain, storms, and snow at low altitudes, according to the Ministry of Climate Crisis and Civil Protection.

Greece to Experience Record Temperature Drop, Heavy Weather

Greece's weather will drastically change this week, dropping as much as 20°C in some areas from unusually high temperatures last week, with heavy rain, storms, and snow at low altitudes, according to the Ministry of Climate Crisis and Civil Protection.

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Climate Action

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What are the primary causes of the extreme temperature fluctuations?

The unexpected temperature swings are attributed to the combination of an unusually warm period last week—described as a "spring heatwave"—and the arrival of a cold front from the Balkans. This rapid temperature change, as much as 15°C in 48 hours, is a record high for this time of year, according to the National Observatory of Athens.

theglobeandmail.com

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Mar 17, 22:12

Fijian Iguanas' Transpacific Voyage: A Genetic and Statistical Analysis

Genetic analysis reveals Fijian iguanas originated from North America, likely via an 8,000-kilometer journey on floating vegetation rafts millions of years ago, a feat aided by their dehydration resistance, and this discovery is crucial for their conservation.

Fijian Iguanas' Transpacific Voyage: A Genetic and Statistical Analysis

Genetic analysis reveals Fijian iguanas originated from North America, likely via an 8,000-kilometer journey on floating vegetation rafts millions of years ago, a feat aided by their dehydration resistance, and this discovery is crucial for their conservation.

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Life on Land

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How did Fijian iguanas, geographically isolated in the South Pacific, originate from North America?

A new study suggests that Fijian iguanas, most closely related to North American desert iguanas, likely reached Fiji millions of years ago by floating on vegetation rafts across 8,000 kilometers of ocean. This journey, a record for land vertebrates, is supported by genetic analysis and a statistical model.

dailymail.co.uk

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Mar 17, 19:17

Air Pollution Linked to Increased Parkinson's Risk

A study of over 3,000 adults in California and Denmark found a nine percent increased risk of Parkinson's disease in areas with high traffic-related air pollution; genetically susceptible individuals faced up to a three-fold risk increase.

Air Pollution Linked to Increased Parkinson's Risk

A study of over 3,000 adults in California and Denmark found a nine percent increased risk of Parkinson's disease in areas with high traffic-related air pollution; genetically susceptible individuals faced up to a three-fold risk increase.

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Good Health and Well-being

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What is the specific impact of traffic-related air pollution on Parkinson's disease risk, according to this study?

A new study suggests a link between air pollution and Parkinson's disease. Research indicates those in heavily polluted cities face a higher risk, especially those with a genetic predisposition, who are up to three times more likely to develop the condition. The study involved over 3,000 adults and found high traffic-related air pollution increased Parkinson's risk by nine percent overall.

theguardian.com

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Mar 17, 07:10

Delayed Astronauts Returning to Earth on Tuesday

US astronauts Barry Wilmore and Suni Williams, along with NASA astronaut Nick Hague and Roscosmos cosmonaut Aleksandr Gorbunov, will return to Earth on Tuesday evening aboard a SpaceX Crew Dragon after a nine-month ISS stay due to a Boeing Starliner spacecraft malfunction.

Delayed Astronauts Returning to Earth on Tuesday

US astronauts Barry Wilmore and Suni Williams, along with NASA astronaut Nick Hague and Roscosmos cosmonaut Aleksandr Gorbunov, will return to Earth on Tuesday evening aboard a SpaceX Crew Dragon after a nine-month ISS stay due to a Boeing Starliner spacecraft malfunction.

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How did the unexpected nine-month stay affect the astronauts' personal needs, and what measures were taken to address them?

The astronauts' extended nine-month stay on the ISS, exceeding the standard six-month rotation, resulted from propulsion issues with the Boeing Starliner spacecraft. This unexpected delay led to the need for resupply of personal items. Their return is now possible due to favorable weather conditions.

forbes.com

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Mar 17, 13:15

Blood Moon" Eclipse and Aurora Confluence Captured in Stunning Alaskan Photographs

Astrophotographer Dan Zafra captured unique images of a total lunar eclipse overlapping with an aurora substorm in Northern Alaska on March 13, 2025, during the sun's solar maximum, a period of heightened aurora activity; other photographers captured similar images.

Blood Moon" Eclipse and Aurora Confluence Captured in Stunning Alaskan Photographs

Astrophotographer Dan Zafra captured unique images of a total lunar eclipse overlapping with an aurora substorm in Northern Alaska on March 13, 2025, during the sun's solar maximum, a period of heightened aurora activity; other photographers captured similar images.

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How did the current solar maximum period increase the likelihood of this cosmic coincidence?

Zafra's successful capture was due to planning during the sun's solar maximum, a period of increased aurora activity. He traveled to Northern Alaska specifically to attempt this shot, leveraging his knowledge of increased aurora frequency. Salat's images from Denali National Park further highlight the increased probability of such events during this solar cycle.

forbes.com

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Mar 17, 22:12

Blue Ghost Lunar Lander Completes Successful Mission, Exceeds Expectations

Firefly Aerospace's Blue Ghost lunar lander, launched as part of the Ghost Riders in the Sky mission on March 2, 2024, completed its mission after 14 Earth days, exceeding its operational lifespan by five hours, successfully deploying NASA payloads including a lunar vacuum, and transmitting a final ...

Blue Ghost Lunar Lander Completes Successful Mission, Exceeds Expectations

Firefly Aerospace's Blue Ghost lunar lander, launched as part of the Ghost Riders in the Sky mission on March 2, 2024, completed its mission after 14 Earth days, exceeding its operational lifespan by five hours, successfully deploying NASA payloads including a lunar vacuum, and transmitting a final ...

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Industry, Innovation, and Infrastructure

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How does the Blue Ghost mission exemplify the evolving partnership between NASA and private companies in lunar exploration?

Blue Ghost's mission highlights the growing collaboration between private companies and NASA in lunar exploration. The lander's success, including the deployment of NASA's lunar vacuum for sample collection, demonstrates the feasibility of using commercially operated landers for scientific research. This strategy is cost-effective and accelerates the pace of lunar discovery.

dw.com

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Mar 17, 22:12

131-Million-Year-Old Pregnant Ichthyosaur Fossil Discovered in Patagonia

A 131-million-year-old pregnant ichthyosaur fossil, Fiona, was discovered in Chilean Patagonia due to glacial retreat from climate change; it belongs to the Myobradypterygius hauthali species, filling a 70-million-year gap in the fossil record and providing insights into its anatomy, reproduction, a...

131-Million-Year-Old Pregnant Ichthyosaur Fossil Discovered in Patagonia

A 131-million-year-old pregnant ichthyosaur fossil, Fiona, was discovered in Chilean Patagonia due to glacial retreat from climate change; it belongs to the Myobradypterygius hauthali species, filling a 70-million-year gap in the fossil record and providing insights into its anatomy, reproduction, a...

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How does Fiona's discovery in the Tyndall Glacier area, a rich fossil site, contribute to our understanding of ichthyosaur distribution, abundance, and paleoecology during the Hauterivian age?

Fiona's discovery in the Tyndall Glacier area, a site dubbed a 'dragon graveyard', adds to the 87 other complete or articulated ichthyosaurs found there. This site now holds the highest concentration of Hauterivian ichthyosaurs globally, showcasing a rich fossil record. The exceptional preservation allows for detailed analysis of Fiona's skeletal structure, including a 50cm-long fetus, evidence of a fish-based diet, and a unique bone pathology.

us.cnn.com

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Mar 17, 22:12

Infectious Disease Researcher Fights Medical Misinformation

Infectious disease researcher Laurel Bristow combats medical misinformation through social media and podcasts, empowering individuals with accurate health information to make informed decisions; her five tips for evaluating health claims include scrutinizing sources, avoiding emotional manipulation,...

Infectious Disease Researcher Fights Medical Misinformation

Infectious disease researcher Laurel Bristow combats medical misinformation through social media and podcasts, empowering individuals with accurate health information to make informed decisions; her five tips for evaluating health claims include scrutinizing sources, avoiding emotional manipulation,...

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Good Health and Well-being

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What is the primary impact of medical misinformation, and how does Bristow's work address this issue?

Laurel Bristow, an infectious disease researcher, combats medical misinformation by creating educational content and debunking false claims on social media. Her efforts stem from a desire to empower people with accurate information, reducing anxiety and promoting informed decision-making regarding their health.

liberation.fr

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Mar 17, 19:16

Ancient Mesopotamian Tablets Reveal Sophisticated Bureaucracy

Archaeological excavations in Girsu, Iraq, have unearthed over 200 ancient clay tablets dating back to the Akkadian Empire (2300-2150 BC), providing unprecedented insight into the sophisticated bureaucratic systems of ancient Mesopotamia, including detailed records of daily transactions, resource ma...

Ancient Mesopotamian Tablets Reveal Sophisticated Bureaucracy

Archaeological excavations in Girsu, Iraq, have unearthed over 200 ancient clay tablets dating back to the Akkadian Empire (2300-2150 BC), providing unprecedented insight into the sophisticated bureaucratic systems of ancient Mesopotamia, including detailed records of daily transactions, resource ma...

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No Poverty

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How do the Girsu tablets illuminate the social structure and roles of women within the Akkadian Empire?

The Girsu tablets' comprehensive nature reveals a complex, centralized administration capable of monitoring diverse aspects of daily life across a large empire. Detailed records of goods, services, and personnel demonstrate a sophisticated understanding of resource management and population control. This level of organization challenges assumptions about ancient societies' administrative capacities.

smh.com.au

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Mar 17, 04:08

Australia's World-First Shellfish Reef Restoration Project Shows Early Success

In Port Phillip Bay, Australia, a pioneering project is restoring a damaged shellfish reef using limestone fertilizer and donated shells containing oyster larvae, aiming to cover 1000 square meters and reverse decades of ecosystem decline caused by overfishing, pollution, and dredging.

Australia's World-First Shellfish Reef Restoration Project Shows Early Success

In Port Phillip Bay, Australia, a pioneering project is restoring a damaged shellfish reef using limestone fertilizer and donated shells containing oyster larvae, aiming to cover 1000 square meters and reverse decades of ecosystem decline caused by overfishing, pollution, and dredging.

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Life Below Water

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How does this project address the historical causes of shellfish reef decline in Port Phillip Bay?

The project addresses the severe decline of shellfish reefs in the bay, caused by overfishing, pollution, and dredging for shipping channels. By mimicking natural processes, the initiative seeks to restore biodiversity and improve water quality, showcasing a potential model for global reef restoration efforts.

Showing 2,269 to 2,280 of 5,059 results