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Medical science.
Bennett, 57, has suffered from severe heart failure and must be kept alive by extracorporeal membrane oxygenation (ECMO).
Bennett successfully received a heart transplant at the University of Maryland Medical Center on January 7 this year, and the heart was in good condition without immune rejection.
But starting a few days ago, Bennett's health gradually deteriorated and eventually became untreatable.
Nuclear leakage.
Ukraine says power outage at Chernobyl nuclear power plant could lead to nuclear leakage.
Ukrainian Foreign Minister Dmytro Qureba (Dmytro Kuleba) said on Twitter that the only power grid at Ukraine's Chernobyl nuclear power plant was damaged, which supplies power to the plant and all nuclear facilities, so all facilities at the Chernobyl plant were cut off.
However, due to the current conflict, the high-voltage power lines cannot be repaired immediately.
However, according to a statement issued by Ukrainian power system operators, they started emergency diesel generators on site to power critical systems.
In the case of fault-free operation, the diesel generator can run for 48 hours.
However, after 48 hours, the cooling system of the spent fuel storage facility will be shut down, which may lead to the release of radioactive material into the environment.
In addition, in the absence of electricity, the ventilation system of the plant will not work, which will expose workers to dangerous doses of radiation.
However, the International Atomic Energy Agency (IAEA) later said on Twitter that the heat load and cooling water contained in the spent fuel storage pool at the Chernobyl nuclear power plant are sufficient to maintain effective heat dissipation without power supply, so the power outage will not have a significant impact on safety.
(interface News).
Astronomy.
There may be a gas disk full of black holes around the black hole at the center of the galaxy.
In 2019, the gravitational wave event GW190521 was observed by the Laser interference gravitational Wave Observatory (LIGO).
The analysis shows that the event is caused by the merging of two black holes with masses of 85 and 66 solar masses into one black hole with 142 solar masses.
However, the data show that the two black holes do not move in a circle around each other before merging, which runs counter to the usual understanding of the properties of gravitational waves.
A study published in the journal Nature on March 9 suggests a new way of thinking.
The researchers speculate that GW190521 occurs on a gas disk around a supermassive black hole at the center of the galaxy.
Compared with the free three-dimensional space, the density of the black hole on this two-dimensional surface is very high. When the two black holes merge, they will not move in a circle due to the influence of the third black hole around them.
This assumption increases the probability of merging in non-circular motion by 100 times, and half of all black hole mergers on the gas disk around the black hole at the center of the galaxy are similar mergers.
If follow-up observations continue to support this model, it shows that there may be many black holes around supermassive black holes.
Twenty-four US scientists, doctors and public health experts have published a 136-page report saying that the death toll from infection with novel coronavirus is about 10 times that of other respiratory viruses.
Recently, due to the sharp decline in the number of people infected with novel coronavirus and hospitalization, various regions of the United States are relaxing epidemic prevention and control policies, but the report points out that mass immunization due to vaccines and natural infections does not necessarily reduce the risk of infection.
The report also said that life could not get back on track until novel coronavirus posed a threat similar to common respiratory viruses such as flu, so they warned not to give up their vigilance because of premature victories.
The current epidemic situation in Lianyungang City was caused by Omicron branch.
On the 9th, the fourth press conference on the prevention and control of the epidemic was held in Lianyungang, Jiangsu Province.
Chen Zhi, director of the Health Commission of Lianyungang City, announced: according to the gene sequence analysis of the city's case novel coronavirus by the Jiangsu Center for Disease Control and Prevention, the novel coronavirus strain of this epidemic is an evolutionary branch of the O'Micron mutant.
In addition, by comparison and analysis, the mutant strains of this epidemic are different from the viruses that caused the epidemic in Jiangsu Province before.
Director Chen Zhi also warned that the mutant is highly communicable and easy to spread in densely populated places. In view of the seriousness and complexity of the current epidemic situation, citizens should strictly abide by various epidemic prevention and control measures, enhance their awareness of personal protection, and reduce going out as far as possible.
Geoscience.
Tianqin-1 satellite obtains global gravity field data.
Earth gravity field data can be used in geodesy, geophysics, oil and gas resources exploration, national defense and security and other fields.
During the two sessions of the National people's Congress, Luo Jun, a deputy to the National people's Congress, academician of the Chinese Academy of Sciences, and chief scientist of China's independent space gravitational wave detection "Tianqin Project", revealed that the "Tianqin-1" satellite of Sun Yat-sen University has recently obtained global gravity field data. this is the first time that China has used domestic autonomous satellites to measure global gravity field data.
After the United States and Germany, China has become the third country with the ability to independently detect the global gravity field.
Tianqin project is a space gravitational wave detection plan put forward by Academician Luo Jun in 2014, and Tianqin-1 is not a special gravity satellite, its purpose is to verify the key technologies of space gravitational wave detection.
On August 7, 2020, Tianqin-1 carried out an experiment on the application of the earth's gravity field for about 30 hours.
After the Tianqin project team of Sun Yat-sen University and Huazhong University of Science and Technology processed the data, they recently completed the summary and evaluation of the in-orbit test and obtained the global gravity field data science report.
This result passes through the whole data processing technology of using Leo satellite to retrieve the global gravity field, and lays a solid technical foundation for the follow-up gravity satellite project in China.
At present, the "Tianqin II" verification satellite project is progressing smoothly.
(science and Technology Daily)
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When you get up suddenly, you will faint. These two movements can be relieved easily.
Many people have the experience of standing up suddenly and feeling dizzy after sitting for too long. In fact, such a small symptom is related to the blood flow of our whole body. Now, a study has found two simple ways to learn them to help you relieve these symptoms immediately.
By jsyeem shekels3 years ago in Earth
Inside Trump's $11 Billion Health Plan to Replace “Neo-Colonial” USAID
In the landscape of global health aid, few proposals have stirred as much debate as former President Donald Trump’s ambitious plan to restructure American assistance abroad. Dubbed an $11 billion health initiative aimed at replacing USAID’s current framework, the plan seeks to pivot away from what Trump and his allies have criticized as the “neo-colonial” approach of U.S. foreign aid. While the plan promises greater efficiency and impact, experts are split on whether it is a practical solution or a politically driven gamble. Trump’s Critique of USAID The United States Agency for International Development (USAID) has long been a central pillar of American foreign assistance, distributing billions in aid annually to address health crises, food insecurity, and development challenges worldwide. However, Trump’s administration and its supporters have often described USAID’s approach as bureaucratic, inefficient, and reflective of a “neo-colonial” mindset. In public statements, Trump argued that the U.S. was spending taxpayer dollars on programs that benefited foreign governments or contractors more than the intended local communities. Critics of the plan say that while USAID has flaws—as any large bureaucracy does—its extensive networks and decades of experience provide an unmatched capacity to deliver aid efficiently and safely. The Core of the $11 Billion Proposal At the heart of Trump’s proposal is an $11 billion fund designed to consolidate, modernize, and streamline U.S. health aid. Unlike the traditional USAID model, which relies heavily on long-term partnerships with governments and NGOs, the new plan emphasizes: Direct Impact Funding: Allocating resources to frontline health workers and local initiatives rather than intermediaries. Data-Driven Investments: Using real-time health data to target outbreaks and crises more efficiently. Private Sector Partnerships: Leveraging U.S. pharmaceutical companies, tech firms, and healthcare startups to deliver vaccines, treatments, and medical infrastructure. Shorter Program Cycles: Moving away from multi-year funding commitments in favor of more flexible, results-oriented programs. Proponents argue that this approach could reduce bureaucratic overhead and ensure U.S. aid reaches communities faster. By “cutting out the middlemen,” Trump supporters claim, America can avoid the pitfalls of slow-moving aid programs that sometimes fail to adapt to crises. Reactions from the Global Health Community Global health experts, however, have expressed concern about both the logistics and philosophy of the plan. Dr. Melissa Ortega, a senior researcher at the Global Health Policy Institute, explained, “The idea of bypassing established structures like USAID may sound appealing on paper, but in practice, it risks undermining decades of institutional knowledge. Health systems are complex, and short-term projects cannot replace long-term capacity building.” Some critics have also questioned the characterization of USAID as “neo-colonial.” While U.S. foreign aid has historically been tied to geopolitical interests, many programs today are designed collaboratively with recipient countries and local organizations. Reducing oversight could unintentionally increase the risk of misuse, corruption, or health inequities. On the other hand, supporters of Trump’s plan point to examples of inefficiency in USAID programs, citing cases where aid was delayed or mismanaged. By introducing more direct funding models, they argue, U.S. taxpayer dollars could achieve a higher “return on health outcomes.” Political Implications Trump’s health aid overhaul proposal is not just about international development—it is also deeply political. Framing USAID as a “neo-colonial” institution resonates with a populist narrative that America should prioritize its own citizens and assert greater control over how taxpayer money is spent abroad. Domestically, the $11 billion plan faces scrutiny from Congress. Lawmakers from both parties have questioned whether dismantling USAID’s systems could destabilize ongoing health programs in countries where the U.S. has long-term commitments. The potential impact on global health security—including the fight against pandemics like COVID-19—adds another layer of concern. Internationally, U.S. allies and partner nations are watching closely. Sudden shifts in aid delivery could disrupt health programs in low- and middle-income countries, many of which rely on predictable funding cycles to maintain vaccination campaigns, maternal health services, and disease surveillance. Possible Benefits and Risks If executed carefully, the Trump-backed model could bring several benefits: Faster Response Times: Direct funding could accelerate delivery of vaccines, treatments, and emergency support. Innovation Boost: By partnering with private sector companies, the plan could accelerate development of new health technologies. Accountability: With performance-based metrics, the plan may better measure the impact of U.S. aid. However, the risks are equally significant: Disruption of Existing Programs: Abrupt changes could destabilize ongoing health projects. Loss of Expertise: USAID’s decades of experience in navigating local governance, supply chains, and community engagement may be hard to replace. Geopolitical Fallout: Allies accustomed to collaborating with USAID might see the move as destabilizing, reducing cooperation on global health initiatives. Looking Ahead As Trump and his allies continue to advocate for this $11 billion overhaul, the debate over the future of U.S. health aid is intensifying. Proponents view it as a necessary modernization of an outdated system, while critics fear it could undercut decades of carefully built infrastructure and global partnerships. Ultimately, the success of this plan will hinge on its ability to balance efficiency with stability, innovation with oversight, and political objectives with humanitarian needs. For now, the proposal remains controversial, representing a dramatic departure from traditional approaches to U.S. foreign aid. Whether it will reshape global health for the better—or simply create more uncertainty—remains to be seen. In the end, the Trump health plan is as much about ideology as it is about dollars. It challenges the conventional wisdom of international development and asks whether a more streamlined, results-focused approach can truly replace a system built over decades. As the world watches, the stakes could not be higher: the future of U.S. global health aid—and the lives it touches—hangs in the balance.
By Muhammad Hassan3 days ago in Earth
Nitrogen is necessary for young tropical rain forests to combat climate change.
By absorbing carbon dioxide from the atmosphere and storing it in wood, tropical rainforests contribute to the slowing of climate change. Forests that develop quickly are even more important because they absorb carbon more quickly.
By Francis Dami2 days ago in Earth
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