Tag #Science

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pda.kp.ru

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Mar 18, 04:11

Leonov's Perilous Spacewalk: A Legacy of Improved Space Safety

Cosmonaut Alexey Leonov's historic 16-minute spacewalk on March 18, 1965, involved life-threatening equipment malfunctions, a difficult emergency landing in the Siberian taiga after three days, yet spurred improvements in space safety for the following 60 years.

Leonov's Perilous Spacewalk: A Legacy of Improved Space Safety

Cosmonaut Alexey Leonov's historic 16-minute spacewalk on March 18, 1965, involved life-threatening equipment malfunctions, a difficult emergency landing in the Siberian taiga after three days, yet spurred improvements in space safety for the following 60 years.

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What immediate life-threatening dangers did Alexey Leonov face during his pioneering spacewalk, and what were the near-term consequences?

On March 18, 1965, Alexey Leonov became the first human to perform a spacewalk, a 16-minute venture fraught with peril. Immediately after the 1 hour 35 minute mark following launch, while still experiencing effects from high G-forces, Leonov's spacesuit inflated, hindering his return to the spacecraft. He had to reduce his suit's pressure to 0.27 atmospheres, against regulations, to re-enter the airlock.

cbsnews.com

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Mar 18, 01:19

Astronauts Return to Earth After 286-Day ISS Mission

Four astronauts, including those aboard Boeing's Starliner, returned to Earth on Tuesday after a 286-day stay at the ISS due to initial spacecraft issues, splashdown occurred off Florida's Gulf Coast at 5:57 p.m. EDT after an automated de-orbit.

Astronauts Return to Earth After 286-Day ISS Mission

Four astronauts, including those aboard Boeing's Starliner, returned to Earth on Tuesday after a 286-day stay at the ISS due to initial spacecraft issues, splashdown occurred off Florida's Gulf Coast at 5:57 p.m. EDT after an automated de-orbit.

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Why was the mission extended significantly beyond the initial eight-day plan?

Wilmore and Williams' extended stay was due to initial propulsion system issues with the Boeing Starliner. To minimize disruption to ISS operations, NASA integrated them into the subsequent Crew 9 mission, extending their stay to 286 days. The return was expedited to capitalize on favorable weather conditions for splashdown.

elpais.com

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Mar 18, 22:10

Conservation Successes Highlight Urgent Need for Broader Biodiversity Action

A study of 67,217 species on the IUCN Red List reveals that over half have benefited from conservation programs, leading to significant population rebounds in species like the Iberian lynx, but also highlights the urgent need for more widespread and intensive interventions to combat the global biodi...

Conservation Successes Highlight Urgent Need for Broader Biodiversity Action

A study of 67,217 species on the IUCN Red List reveals that over half have benefited from conservation programs, leading to significant population rebounds in species like the Iberian lynx, but also highlights the urgent need for more widespread and intensive interventions to combat the global biodi...

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Life on Land

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How do the successes and failures of conservation efforts, such as those involving invasive species, inform strategies for broader biodiversity protection?

Successful conservation hinges on targeted interventions like reintroduction programs (as seen with the Iberian lynx), eradication of invasive species (demonstrated with the Campbell teal), and habitat management, often complemented by community involvement. The study highlights that while many species in isolated areas respond well to intensive conservation, broader systemic changes are needed to address the global biodiversity crisis.

pda.kp.ru

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Mar 18, 10:15

23% of COVID-19 Patients Experienced Long COVID: Spanish Study

A Spanish study found that 23% of individuals who contracted COVID-19 between 2021 and 2023 experienced long COVID, with symptoms lasting up to two years in over half; risk factors included being female, severe initial infection, pre-existing conditions, obesity, and anxiety/depression; vaccination ...

23% of COVID-19 Patients Experienced Long COVID: Spanish Study

A Spanish study found that 23% of individuals who contracted COVID-19 between 2021 and 2023 experienced long COVID, with symptoms lasting up to two years in over half; risk factors included being female, severe initial infection, pre-existing conditions, obesity, and anxiety/depression; vaccination ...

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What are the long-term societal implications of long COVID, considering the lack of a uniform diagnosis and treatment?

This research emphasizes the long-term systemic impact of COVID-19, potentially straining healthcare systems and impacting workforce productivity. The lack of a standardized diagnosis and treatment for long COVID presents significant challenges for healthcare providers. Further research is crucial to understand the underlying mechanisms and develop effective interventions.

english.elpais.com

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Mar 18, 19:11

Polypill Proposed for Widespread Heart Disease Prevention

A BMJ opinion piece proposes a polypill containing statins and blood pressure medications for all over-50s to prevent heart disease, potentially saving thousands of lives, despite criticism that it targets a 'healthy' system.

Polypill Proposed for Widespread Heart Disease Prevention

A BMJ opinion piece proposes a polypill containing statins and blood pressure medications for all over-50s to prevent heart disease, potentially saving thousands of lives, despite criticism that it targets a 'healthy' system.

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Why is the polypill approach considered a more effective preventative strategy than current methods?

The polypill strategy, combining statins and blood pressure medications, addresses the fact that most heart attacks occur in people with average risk levels. This preventative approach contrasts with current methods, which focus on identifying high-risk individuals. Supporters cite its cost-effectiveness and potential to improve adherence compared to multiple single medications.

mk.ru

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Mar 18, 16:10

Dietary Supplements Slow Prostate Cancer Progression in UK Study

A British study of 212 men with low-risk prostate cancer found that a supplement containing phytochemicals from six foods (broccoli, turmeric, pomegranate, green tea, ginger, and cranberry) and probiotics slowed disease progression by 42%, with most men opting for continued observation instead of ra...

Dietary Supplements Slow Prostate Cancer Progression in UK Study

A British study of 212 men with low-risk prostate cancer found that a supplement containing phytochemicals from six foods (broccoli, turmeric, pomegranate, green tea, ginger, and cranberry) and probiotics slowed disease progression by 42%, with most men opting for continued observation instead of ra...

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What are the potential long-term implications of these findings for prostate cancer treatment strategies and patient management?

The findings, presented at the American Society of Clinical Oncology, suggest that these dietary supplements can significantly slow prostate cancer progression. The improved results highlight the potential of these supplements in managing low-risk prostate cancer, offering a less invasive alternative for many patients. Further research is warranted to confirm these findings and explore broader applications.

mk.ru

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Mar 18, 16:10

Early Speech Changes Indicate Alzheimer's Disease

Alzheimer's disease, a leading cognitive disorder, shows early signs in speech, including word-finding difficulties, substitutions, and task avoidance; early detection is crucial for support and treatment, especially in high-risk individuals like those with Down syndrome.

Early Speech Changes Indicate Alzheimer's Disease

Alzheimer's disease, a leading cognitive disorder, shows early signs in speech, including word-finding difficulties, substitutions, and task avoidance; early detection is crucial for support and treatment, especially in high-risk individuals like those with Down syndrome.

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What are the key early speech indicators of Alzheimer's disease, and how can recognizing these improve patient outcomes?

Alzheimer's disease, a leading cognitive disorder, causes progressive brain deterioration. Early detection, focusing on speech changes like word-finding difficulties, using vague terms, or substituting words, is crucial for timely support. Neurological studies identify these speech issues as early indicators, highlighting the importance of recognizing these subtle changes.

africa.chinadaily.com.cn

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Mar 18, 10:15

Nobel Laureates Urge Action on Global Food Security Crisis

Over 150 Nobel laureates urged global leaders to prioritize agricultural R&D and develop "moonshot" technologies to solve the growing food security crisis caused by climate change, population growth, and resource scarcity.

Nobel Laureates Urge Action on Global Food Security Crisis

Over 150 Nobel laureates urged global leaders to prioritize agricultural R&D and develop "moonshot" technologies to solve the growing food security crisis caused by climate change, population growth, and resource scarcity.

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Zero Hunger

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What are the primary challenges and proposed technological solutions to address the growing global food security crisis?

The world population is projected to reach nearly 10 billion by 2050, necessitating a substantial increase in food production. Climate change and resource scarcity hinder this, leading to a critical food supply-demand gap. Over 150 Nobel laureates urged global leaders in January 2025 to prioritize agricultural R&D and develop advanced technologies to address this.

cnn.com

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Mar 18, 10:15

Rare Snow Leopard Sighting Celebrated as Conservation Success in Pakistan

Footage of four snow leopards, a mother and three cubs, was captured by gamekeeper Sakhawat Ali in Pakistan's Central Karakoram National Park on March 13, showcasing successful conservation efforts and community engagement in protecting endangered species, despite ongoing threats like climate change...

Rare Snow Leopard Sighting Celebrated as Conservation Success in Pakistan

Footage of four snow leopards, a mother and three cubs, was captured by gamekeeper Sakhawat Ali in Pakistan's Central Karakoram National Park on March 13, showcasing successful conservation efforts and community engagement in protecting endangered species, despite ongoing threats like climate change...

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Life on Land

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What is the significance of the recent snow leopard sighting in Pakistan for global conservation efforts?

Footage of four snow leopards, a mother and three cubs, was captured in Pakistan's Central Karakoram National Park on March 13. This rare sighting, by gamekeeper Sakhawat Ali, is a significant success for conservation efforts in the region, highlighting the effectiveness of community involvement in protecting endangered species. Local celebrations underscore the positive impact of conservation initiatives.

elpais.com

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Mar 18, 10:15

Crew-9 Returns to Earth After 9.5-Month ISS Stay

On Tuesday, September 30, 2024, at 6:05 AM Spanish peninsular time, NASA astronauts Suni Williams and Butch Wilmore, along with Nick Hague and Alexander Gorbunov, left the ISS aboard the SpaceX Dragon 'Freedom' after a 9.5-month stay due to a Starliner spacecraft malfunction, with a scheduled splash...

Crew-9 Returns to Earth After 9.5-Month ISS Stay

On Tuesday, September 30, 2024, at 6:05 AM Spanish peninsular time, NASA astronauts Suni Williams and Butch Wilmore, along with Nick Hague and Alexander Gorbunov, left the ISS aboard the SpaceX Dragon 'Freedom' after a 9.5-month stay due to a Starliner spacecraft malfunction, with a scheduled splash...

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How did a minor malfunction in the original spacecraft impact the mission timeline and the astronauts' experience on the ISS?

The unexpected delay transformed a routine crew replacement mission into a prolonged stay for Williams and Wilmore, who became known as the "astronauts trapped in space". Their return journey involves a series of precise maneuvers, including a critical engine burn to initiate re-entry around 10 PM Spanish peninsular time, followed by atmospheric descent and a planned splashdown off the coast of Florida at approximately 10:57 PM.

bbc.com

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Mar 18, 10:15

Stranded Astronauts Return to Earth After Nine-Month ISS Stay

NASA astronauts Suni Williams and Butch Wilmore, along with NASA astronaut Nick Hague and Russian cosmonaut Aleksandr Gorbunov, are returning to Earth on a SpaceX Dragon capsule after a nine-month stay on the ISS due to technical problems with their initial Boeing Starliner spacecraft.

Stranded Astronauts Return to Earth After Nine-Month ISS Stay

NASA astronauts Suni Williams and Butch Wilmore, along with NASA astronaut Nick Hague and Russian cosmonaut Aleksandr Gorbunov, are returning to Earth on a SpaceX Dragon capsule after a nine-month stay on the ISS due to technical problems with their initial Boeing Starliner spacecraft.

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What spacecraft is being used for the astronauts' return journey and why?

The mission's extension from eight days to nine months highlights the challenges and risks inherent in space travel. Technical problems with the Boeing Starliner necessitated the use of a SpaceX Dragon for the return trip, illustrating the importance of redundancy and flexibility in space missions. The astronauts' adaptation to prolonged space travel and the impact on their health are also significant considerations.

aljazeera.com

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Mar 18, 07:16

NASA Astronauts Return to Earth After 9-Month ISS Delay

Astronauts Sunita Williams and Barry Wilmore, stranded on the ISS since June 5, 2024, due to malfunctions with Boeing's Starliner, will return to Earth on Tuesday, September 24, aboard a SpaceX Crew Dragon, after a nine-month extended stay.

NASA Astronauts Return to Earth After 9-Month ISS Delay

Astronauts Sunita Williams and Barry Wilmore, stranded on the ISS since June 5, 2024, due to malfunctions with Boeing's Starliner, will return to Earth on Tuesday, September 24, aboard a SpaceX Crew Dragon, after a nine-month extended stay.

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What were the primary causes of the nine-month delay in the return of astronauts Williams and Wilmore from the ISS?

NASA astronauts Sunita Williams and Barry Wilmore are returning to Earth after a nine-month unplanned stay at the ISS, caused by issues with their original spacecraft, Boeing's Starliner. They departed the ISS on Tuesday and are expected to splash down off the coast of Florida. This extended stay surpassed the typical six-month ISS rotation.

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