Tag #Science

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pda.kp.ru

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Jan 27, 04:06

Astronaut Vision Problems Threaten Moon and Mars Missions

A study shows 70% of astronauts experience severe vision problems (SANS) after six months on the ISS due to microgravity and blood pooling in the eye, posing challenges for future Moon and Mars missions due to prolonged exposure and radiation.

Astronaut Vision Problems Threaten Moon and Mars Missions

A study shows 70% of astronauts experience severe vision problems (SANS) after six months on the ISS due to microgravity and blood pooling in the eye, posing challenges for future Moon and Mars missions due to prolonged exposure and radiation.

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What are the primary health risks associated with long-duration space travel, and how do these risks impact plans for future missions to the Moon and Mars?

A new study reveals that approximately 70% of astronauts experience severe vision problems after long-duration stays on the ISS, specifically after more than six months. This is primarily attributed to Spaceflight-Associated Neuro-ocular Syndrome (SANS), characterized by reduced eye stiffness, increased intraocular pressure, and other vision impairments.

spanish.china.org.cn

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Jan 27, 10:11

Xia-Shang Stone Structures Found in Wuhan

Excavations at the 3,500-year-old Panlongcheng site in Wuhan, China, have unearthed large-scale stone structures dating back to the Xia-Shang period (2070-1046 BC), representing the first such discovery in the Yangtze River basin and indicating a high social status for their builders.

Xia-Shang Stone Structures Found in Wuhan

Excavations at the 3,500-year-old Panlongcheng site in Wuhan, China, have unearthed large-scale stone structures dating back to the Xia-Shang period (2070-1046 BC), representing the first such discovery in the Yangtze River basin and indicating a high social status for their builders.

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Industry, Innovation, and Infrastructure

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How does this discovery contribute to our understanding of the southward expansion of the Central Plains culture during the Xia-Shang period?

The discovery of these stone structures at Panlongcheng confirms the site's importance as a central settlement during the southward expansion of the Central Plains culture. The scale and complexity of the construction, unusual for the Yangtze River basin, provide insights into the advanced engineering and social organization of the Xia-Shang period.

theguardian.com

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Jan 27, 13:09

GSK and Oxford to Research Cancer-Preventing Vaccines

GSK is investing £50 million in a three-year research program with Oxford University to develop cancer vaccines targeting pre-cancerous cells, leveraging advancements in neoantigen identification and mRNA technology.

GSK and Oxford to Research Cancer-Preventing Vaccines

GSK is investing £50 million in a three-year research program with Oxford University to develop cancer vaccines targeting pre-cancerous cells, leveraging advancements in neoantigen identification and mRNA technology.

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How does this research leverage recent advancements in mRNA technology and neoantigen identification?

This collaboration aims to harness the immune system to fight pre-cancerous cells, a novel approach with potential for significantly reducing cancer incidence. The project builds upon advancements in identifying neoantigens and using mRNA technology, similar to COVID-19 vaccines, for personalized cancer prevention. Early trial results show promise across various cancers.

bbc.com

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Jan 27, 16:10

Indian Anthropologist Defies Racist Theories in 1920s Germany

Iravati Karve, India's first female anthropologist, challenged her German advisor's racist theories on cranial asymmetry and racial superiority during her doctoral studies in 1927 Berlin, using a meticulous study of 149 skulls to disprove his hypothesis and defying prevailing racial biases.

Indian Anthropologist Defies Racist Theories in 1920s Germany

Iravati Karve, India's first female anthropologist, challenged her German advisor's racist theories on cranial asymmetry and racial superiority during her doctoral studies in 1927 Berlin, using a meticulous study of 149 skulls to disprove his hypothesis and defying prevailing racial biases.

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Gender Equality

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What factors in Karve's upbringing and early life contributed to her independent spirit and ability to challenge authority, despite facing significant social barriers?

Karve's groundbreaking research, involving the meticulous study of 149 human skulls, directly contradicted prevailing racial theories prevalent in Germany at the time. This courageous act, despite facing low marks from her advisor, established her as a pioneering figure in anthropology.

cnn.com

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Jan 27, 22:08

Lunar Fragment Found Near Earth

A 33-foot-wide asteroid, 2024 PT5, initially considered Earth's temporary "mini-moon," is confirmed as a lunar fragment ejected thousands of years ago, offering insights into lunar impacts and the potential existence of a larger population of lunar asteroids.

Lunar Fragment Found Near Earth

A 33-foot-wide asteroid, 2024 PT5, initially considered Earth's temporary "mini-moon," is confirmed as a lunar fragment ejected thousands of years ago, offering insights into lunar impacts and the potential existence of a larger population of lunar asteroids.

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What is the significance of asteroid 2024 PT5's identification as a lunar fragment?

A 33-foot-wide asteroid, 2024 PT5, initially thought to be a temporary "mini-moon", has been identified as a likely fragment of the Moon ejected thousands of years ago. Its orbit closely resembles Earth's, and spectral analysis confirms its composition matches lunar rocks. This discovery is significant because it provides insights into lunar impacts and the potential existence of a larger population of lunar asteroids.

dailymail.co.uk

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Jan 27, 07:09

Imminent Non-Explosive Eruption Predicted for Well-Monitored Axial Seamount

Axial Seamount, a 3,600-foot underwater volcano off Oregon, is predicted to erupt by the end of 2025 due to swelling, increased seismic activity (mirroring pre-eruption levels from 1998, 2011, and 2015), and a recent increase in seafloor inflation rate from 1 cm/year to 25 cm/year; however, scientis...

Imminent Non-Explosive Eruption Predicted for Well-Monitored Axial Seamount

Axial Seamount, a 3,600-foot underwater volcano off Oregon, is predicted to erupt by the end of 2025 due to swelling, increased seismic activity (mirroring pre-eruption levels from 1998, 2011, and 2015), and a recent increase in seafloor inflation rate from 1 cm/year to 25 cm/year; however, scientis...

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How does the monitoring of Axial Seamount compare to other volcanoes, and what unique insights does this provide?

The volcano's inflation, mirroring pre-eruption levels seen in past eruptions (1998, 2011, 2015), coupled with a recent surge in earthquake activity, strongly indicates an imminent eruption. This prediction is based on continuous monitoring via a cutting-edge fiber-optic cable system providing real-time data, making Axial Seamount the world's best-monitored submarine volcano.

kathimerini.gr

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Jan 27, 10:11

New Treatments Show Promise in Reducing High Lipoprotein(a) Levels and Cardiovascular Risk

Research reveals that high lipoprotein(a) [Lp(a)] levels significantly increase cardiovascular risk, but new treatments showing promise could offer effective reductions of up to 80%, potentially impacting 20% of the population with elevated Lp(a).

New Treatments Show Promise in Reducing High Lipoprotein(a) Levels and Cardiovascular Risk

Research reveals that high lipoprotein(a) [Lp(a)] levels significantly increase cardiovascular risk, but new treatments showing promise could offer effective reductions of up to 80%, potentially impacting 20% of the population with elevated Lp(a).

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What are the key factors determining Lp(a) levels and how do they influence individual risk assessment and management strategies?

Lp(a), similar to LDL cholesterol but with an additional protein, promotes arterial damage, blood clot formation, and inflammation. Genetic factors primarily determine Lp(a) levels, remaining relatively stable throughout life and unaffected by diet or exercise. Approximately 20% of people have Lp(a) levels that increase their risk of cardiovascular disease.

theguardian.com

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Jan 27, 13:09

Ice Stupas: Innovative Solution to Water Scarcity in Ladakh

Due to receding Himalayan glaciers, Ladakh faces severe water scarcity threatening agriculture; Ladakhi engineer Sonam Wangchuk's ice stupas, artificial glaciers storing winter meltwater for spring release, provide a solution, successfully irrigating 5,000 saplings in 2015 and prompting further expa...

Ice Stupas: Innovative Solution to Water Scarcity in Ladakh

Due to receding Himalayan glaciers, Ladakh faces severe water scarcity threatening agriculture; Ladakhi engineer Sonam Wangchuk's ice stupas, artificial glaciers storing winter meltwater for spring release, provide a solution, successfully irrigating 5,000 saplings in 2015 and prompting further expa...

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Clean Water and Sanitation

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How has Sonam Wangchuk's activism, beyond the ice stupas project, contributed to addressing the challenges faced by Ladakh due to climate change?

The ice stupas project, initiated in 2013, channels water from higher altitudes to freeze into large ice formations, providing irrigation during the crucial spring planting season. The project's success is evident in the 2015 inauguration where 1,000 villagers planted 5,000 saplings using meltwater from the stupas, transforming barren land into farmland.

pda.kp.ru

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Jan 27, 13:09

Russia to Launch Personalized mRNA Cancer Vaccine in September 2025

Russia will introduce a personalized mRNA cancer vaccine for melanoma and some leukemia patients in September 2025, developed by the Gamaleya Research Institute with funding from President Putin; initial trials show promise.

Russia to Launch Personalized mRNA Cancer Vaccine in September 2025

Russia will introduce a personalized mRNA cancer vaccine for melanoma and some leukemia patients in September 2025, developed by the Gamaleya Research Institute with funding from President Putin; initial trials show promise.

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How does the technology behind this new cancer vaccine compare to existing mRNA vaccine technologies, and what are its limitations?

This mRNA-based cancer vaccine uses technology similar to COVID-19 vaccines, creating a high concentration of the target antigen to help the immune system distinguish between healthy and diseased cells. Clinical trials have shown positive results in mice, with remission observed in a 59-year-old woman with leukemia in separate CAR-T cell therapy trials.

lexpress.fr

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Jan 27, 16:11

CIA Suggests COVID-19 Lab Leak More Likely, China Rejects Claim

Five years after the COVID-19 pandemic began, the origin remains uncertain, with the CIA suggesting a lab leak is more likely than a natural origin, contradicting a joint WHO-China study, and prompting accusations of politicization from China.

CIA Suggests COVID-19 Lab Leak More Likely, China Rejects Claim

Five years after the COVID-19 pandemic began, the origin remains uncertain, with the CIA suggesting a lab leak is more likely than a natural origin, contradicting a joint WHO-China study, and prompting accusations of politicization from China.

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What is the current status of the investigation into the origins of COVID-19, and what are the main competing hypotheses?

The CIA assessed, with low confidence, that a lab leak origin of COVID-19 is more likely than a natural origin, based on available intelligence. This assessment contradicts a joint WHO-China study concluding a lab leak was extremely improbable. China rejects the CIA's claim, accusing the US of politicizing the issue.

dw.com

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Jan 27, 22:08

AI Pain Test: LLMs Show Sensitivity to Simulated Negative Experiences

A Google DeepMind and London School of Economics study tested nine large language models (LLMs) for sensitivity to simulated "pain" in a novel game; some models prioritized pain avoidance over reward maximization, raising questions about AI sentience and ethical considerations.

AI Pain Test: LLMs Show Sensitivity to Simulated Negative Experiences

A Google DeepMind and London School of Economics study tested nine large language models (LLMs) for sensitivity to simulated "pain" in a novel game; some models prioritized pain avoidance over reward maximization, raising questions about AI sentience and ethical considerations.

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What specific behaviors in the DeepMind and LSE experiment suggest that some LLMs may exhibit sensitivity to simulated "pain," and what are the immediate implications of this finding?

A Google DeepMind and London School of Economics study tested nine large language models (LLMs) in a game where they chose between rewards and simulated "pain." Some models, including Google's Gemini 1.5 Pro, prioritized avoiding "pain" even at the cost of lower scores, suggesting a potential sensitivity to simulated negative experiences. This experiment challenges the understanding of artificial consciousness.

dw.com

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Jan 27, 13:09

GLP-1RA Drugs Show Potential Link to Reduced Risk of Mental Health and Cognitive Conditions

A study of over 1.2 million veterans' medical records suggests a possible link between GLP-1 receptor agonist drugs, such as Ozempic and Wegovy, and a reduced risk of various mental health conditions, including suicidal thoughts, schizophrenia, dementia, and Alzheimer's disease, although further res...

GLP-1RA Drugs Show Potential Link to Reduced Risk of Mental Health and Cognitive Conditions

A study of over 1.2 million veterans' medical records suggests a possible link between GLP-1 receptor agonist drugs, such as Ozempic and Wegovy, and a reduced risk of various mental health conditions, including suicidal thoughts, schizophrenia, dementia, and Alzheimer's disease, although further res...

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How might the mechanisms of action of GLP-1RA drugs explain their potential impact on mental health and addiction?

The observed association between GLP-1RA use and reduced risk of mental health and cognitive decline issues may be linked to the drugs' impact on brain receptors involved in impulse control and reward. This is an observational study, however, so it doesn't establish causality, and further research is needed to confirm these findings and understand the underlying mechanisms.

Showing 3,853 to 3,864 of 5,351 results