Where does time and space come from?
Immunological IMMUNOLOGY
When the vaccine is "ineffective"
In this epidemic, organ transplant recipients and people with low immunity are faced with a dilemma: the first shot of the vaccine is ineffective, the second dose is effective, but does not provide adequate protection. Because the immune system is damaged or suppressed by drugs, they are unable to produce enough antibodies under the stimulation of the vaccine. Therefore, no matter how effective the vaccine is, it is difficult to help them. But the dilemma is not unsolved, and scientists are working with patients to try different solutions. For example, multiple vaccinations, optimized vaccination strategies, or the use of special antibodies.
Biological BIOLOGY
Newt: a slow-paced evolutionary legend
Scientists discovered the peculiarity of salamanders more than 150 years ago: red blood cells are 300 times larger than humans. On the other hand, salamanders are slow, naive, visually impaired, weak in heart and weak everywhere. These bizarre traits are likely to be derived from their huge genomes, which contain dozens of times as many base pairs as humans. Why can salamanders drag their weak, deformed bodies on the earth for 200 million years?
Evolutionary EVOLUTION
Neanderthals are not primitive.
In the popular context, Neanderthals are often synonymous with primitive and stupid. However, the Neanderthal ruins in Croatia tell us that the Neanderthals here performed symbolic behavior long before modern humans arrived in Europe. Neanderthals even have a high percentage of right-handed people-a sign of brain laterality and evidence that language may have budded.
Educational EDUCATION
Let online rumors stop at teenagers
Children usually believe unconfirmed claims such as fake news and conspiracy theories from the age of 14, and the rise of social media has contributed to the spread of these false information. Many educators advocate setting up media literacy courses in middle schools to teach children how to distinguish between true and false information. However, there are profound differences in the content of the curriculum, and some scholars even suspect that some teaching methods may be counterproductive and encourage skepticism among teenagers.
Planetary Science PLANETARY SCIENCE
Planetary defense: taking attack as defense
Asteroids attacking the earth pose a long-term threat, and mankind's existing defense is to deflect the orbit of the attacking celestial body away from the earth. But a successful deflection requires years of preparation in advance. Now some scientists have come up with a new way to attack asteroids in the future and blow them to pieces. Most of the debris will burn up in the earth's atmosphere and will not damage the surface. This method greatly shortens the interception time, will it become the planetary defense in the future?
Pharmacology PHARMACOLOGY
Hallucinogens: banned drugs that have been reactivated
Psychological PSYCHOLOGY
Who would jump into the trap of thinking?
Why do you always follow your feelings and accept the conclusion of "love at first sight", so you often make mistakes in reasoning and decision-making process? the phenomenon of making hasty decisions based on very little evidence is called "thinking jump" and is a common cognitive bias. Thought jumpers are more likely to be overconfident and believe in conspiracy theories. In people with delusional schizophrenia, up to 2/3 of patients show a mental leap. Psychologists hope that paying attention to mind jumping can help research related to schizophrenia. Metacognitive training in schizophrenia research can also help people who think more carefully.
Medical MEDICINE
Super New Drug: artificial Nanoprotein
A new type of nano-protein vaccine has attracted the attention of the scientific community because it can kill the virus in a more controllable and efficient way. This kind of vaccine has a strong affinity with the virus and elicits 10 times more immune responses than traditional vaccines. But its success has also taken nearly 30 years. Scientists have been trying to understand the mysteries of protein folding and how they affect or cause disease. Finally, with the maturity of artificial intelligence algorithms such as AlphaFold2, scientists can easily design and obtain the desired nanoproteins and push them into clinical practice as drugs. In the future, these drugs will be able to play an important role in more treatments.
Astronomy ASTRONOMY
Lock fast radio storm
Fast radio storms come from outside the Milky way and are one of the brightest radio sources in the sky, but a decade ago, they were not even recognized by astronomers. With the rapid development of radio astronomy, rapid radio storms have become the focus of astronomy research. In this process, with its unprecedented excellent performance, "Chinese Sky Eye" can even directly change the way astronomers study rapid radio storms. In addition to debugging, "Chinese Heavenly Eye" also made a tentative observation for two months. At this time, the number of fast radio storms observed has exceeded the sum of the past decade. With the help of a new batch of radio telescopes, astronomers are getting closer to the truth of rapid radio storms.
About the Creator
Keep reading
More stories from jsyeem shekels and writers in Earth and other communities.
How toxic is nail polish? its ingredient is harmful to reproductive health, but it has been ignored by us.
. How much "poison" does it take to get a manicure? In the new study, led by Canadian scholars, 45 manicurists in Toronto, Canada, were observed, and the researchers placed three kinds of air sampling devices on their shoulders, chest and wrists: an active sampler with an air pump, placed on the manicurist's left shoulder, and two passive samplers made into badges and wristbands, with badges on the right and wristbands on their habitual hands. Within an average of eight hours of sampling time, air samples from the main breathing areas of the manicurists at work and the forefront of exposure to manicure products-the hand area-were brought into the laboratory to be tested by scientists, targeting plasticizers such as phthalates (phthalates) and organophosphates (organophosphate esters) that manicurists may be exposed to. In recent years, more and more evidence shows that they are endocrine disruptors, which will affect human reproductive health and fetal neural development.
By jsyeem shekels3 years ago in Earth
UAE Enters Al Shabt: Brace for Winter’s Coldest Days
The United Arab Emirates is set to experience one of the harshest winter spells in recent memory as the country enters Al Shabt, a period traditionally associated with extreme cold. Residents across the emirates are being urged to prepare for temperatures that are expected to drop well below seasonal averages, with potential disruptions to daily life, travel, and energy consumption. Meteorologists have warned that Al Shabt, historically marked by icy winds and sudden temperature dips, will this year be particularly severe due to a combination of regional weather patterns and shifting global climatic trends. Forecasters predict nighttime temperatures in some areas could drop to as low as 8–10°C, a significant decline for a country more accustomed to mild winters. Coastal regions may experience slightly warmer conditions, but the cold will be intensified by strong northern winds sweeping across the Arabian Peninsula. Understanding Al Shabt Al Shabt, which translates to “the coldest part of winter,” is a term deeply embedded in Gulf traditions. Historically, Bedouins and farmers used the period to plan agricultural activities, livestock care, and resource management. Today, while modern infrastructure and urban planning mitigate some effects of the cold, the cultural significance remains, and residents are reminded of its intensity through historical observations and local weather lore. “Al Shabt is more than a cultural marker—it’s a meteorological reality,” said Dr. Aisha Al Mansoori, a senior climatologist at the UAE National Center for Meteorology. “We are observing patterns that suggest this Al Shabt could be colder than usual. Residents should take precautions, especially in northern and inland regions where the temperature drop will be most pronounced.” Preparing for the Cold Authorities across the UAE are taking proactive measures to help residents and businesses prepare for the upcoming cold spell. The Ministry of Interior has issued advisories for motorists to check vehicle heating systems and tire conditions, while electricity and water authorities are ensuring that energy grids are ready for increased demand. Hospitals and emergency services have also been put on alert to handle potential cold-related health incidents. Schools and universities are expected to remain open, but parents are being advised to dress children in warm layers and limit outdoor exposure, especially during early morning and late evening hours. Workplaces are encouraged to implement flexible schedules to reduce the risks associated with commuting during frigid mornings. Travel and Transportation Challenges The UAE’s extensive road network and urban infrastructure may face some challenges during Al Shabt. While snow is highly unlikely, fog formation during the early morning hours could reduce visibility, leading to potential travel disruptions. Aviation authorities are coordinating with meteorologists to monitor conditions at major airports, ensuring that flights remain on schedule while prioritizing passenger safety. “Drivers should exercise caution and plan extra time for their journeys,” said Hamad Al Suwaidi, a senior official at the Roads and Transport Authority. “Even a minor dip in temperature can create slick roads in certain areas, and we advise everyone to remain vigilant and adhere to safety guidelines.” Impact on Daily Life Beyond transportation, the cold weather is expected to affect outdoor events, construction projects, and energy consumption. Many outdoor workers may need additional protective clothing, while households will see a surge in electricity usage for heating. Retailers and service providers are preparing for increased demand for warm clothing, heaters, and other winter essentials. Health experts emphasize the need for precautions, particularly among vulnerable populations such as the elderly, children, and individuals with preexisting conditions. “Cold weather can exacerbate respiratory illnesses and cardiovascular problems,” said Dr. Mohammed Al Hammadi, a public health specialist. “Hydration, proper clothing, and staying indoors during the coldest hours are key measures to minimize health risks.” Looking Ahead While Al Shabt is expected to last for several days, meteorologists suggest that the period of extreme cold will gradually ease as the region transitions toward milder winter conditions. Nevertheless, residents are advised to remain prepared and informed, as sudden weather shifts are common in the Gulf. “The key to navigating Al Shabt is awareness and readiness,” Dr. Al Mansoori concluded. “The cold may be intense, but with proper precautions and respect for the weather, residents can stay safe and even enjoy the unique aspects of this traditional winter period.” In the coming days, the UAE will experience an unusual contrast—desert landscapes typically associated with warmth will be gripped by biting cold, reminding residents of the country’s diverse climatic character. As the nation braces for Al Shabt, the emphasis is on preparation, safety, and resilience, ensuring that the coldest days of winter are met with caution rather than surprise.
By Fiaz Ahmed Brohi4 days ago in Earth
Avalanches Kill Five Off-Piste Skiers in the Austrian Alps
The Austrian Alps are often portrayed as a winter paradise — a place of pristine white slopes, thrilling descents, and breathtaking mountain views. Every year, thousands of skiers and snowboarders travel from across the world to experience Austria’s famous alpine resorts. But over the weekend, that dream turned into a nightmare when five off-piste skiers lost their lives in two separate avalanche incidents, once again reminding the world that nature can be as unforgiving as it is beautiful. The deadly avalanches struck the Salzburg region, one of Austria’s most popular winter sports areas, despite clear warnings about dangerous snow conditions. As rescue teams worked tirelessly in freezing temperatures, the tragedy raised serious questions about off-piste skiing, risk awareness, and the limits of human control in extreme environments. What Happened in the Austrian Alps? According to Austrian authorities, the fatal incidents occurred on Saturday in two different locations within the Salzburg Alps. The first and deadliest avalanche struck a group of off-piste skiers in the Gastein Valley. A large mass of snow broke loose on a steep slope, sweeping through the area and burying multiple people. Four skiers were killed, while two others were injured, one of them critically. One person in the group managed to escape without injuries. Roughly 90 minutes earlier, a separate avalanche occurred near Bad Hofgastein, another well-known alpine destination. In that incident, a female skier was buried under snow at an altitude of around 2,200 meters. Despite rapid rescue efforts, she did not survive, bringing the death toll to five. Emergency services responded immediately, deploying multiple rescue helicopters, mountain rescue teams, search dogs, and medical personnel. However, avalanches move with terrifying speed, often leaving rescuers with only minutes to locate victims before survival chances drop dramatically. Avalanche Warnings Were Already in Place One of the most troubling aspects of this tragedy is that avalanche warnings had already been issued across much of the Austrian Alps. In the days leading up to the weekend, heavy snowfall combined with shifting temperatures created unstable snow layers. Avalanche experts warned that conditions were particularly dangerous, especially in ungroomed and off-piste areas. Some regions were placed under high avalanche risk levels, signaling that even experienced skiers could trigger deadly slides. Local mountain rescue officials later emphasized that the danger was well known. They described the incident as a painful reminder that avalanche bulletins are not theoretical — they exist to save lives. The Risk of Off-Piste Skiing Off-piste skiing, sometimes called backcountry skiing, has grown increasingly popular in recent years. Many skiers are drawn to untouched snow, quieter slopes, and the thrill of adventure beyond resort boundaries. But unlike marked ski runs, off-piste terrain is not controlled or secured against avalanches. Ski resorts routinely use explosives and monitoring systems to reduce avalanche risk on official slopes. Outside those boundaries, however, skiers are fully exposed to natural conditions. Snowpack stability can change suddenly due to wind, temperature shifts, or the weight of a single skier. Even with modern equipment like avalanche beacons and airbags, survival is never guaranteed. Once a person is buried, compacted snow can harden quickly, making self-rescue nearly impossible. A Pattern of Tragedy Across the Alps Sadly, this is not an isolated incident. Avalanche fatalities occur every winter across Europe’s mountain regions, and this season has already seen multiple deadly events. Earlier in the week, a 13-year-old boy was killed in an avalanche at another Austrian resort. In separate incidents, skiers have died in Tyrol, Switzerland, and France, all during periods of elevated avalanche risk. Austria alone records an average of around 20 avalanche-related deaths each year, depending on snow conditions and winter tourism levels. Experts warn that climate change may further complicate the issue by creating more unpredictable weather patterns and unstable snowpacks. Rescue Efforts and Emotional Toll Mountain rescue teams are highly trained and deeply committed, but avalanches remain one of the most challenging emergencies they face. In the Salzburg incidents, rescuers worked under intense pressure, racing against time and extreme weather. Beyond the physical danger, such events take an enormous emotional toll on rescuers, local communities, and families of the victims. Alpine towns rely heavily on tourism, and tragedies like this cast a long shadow over what should be a joyful winter season. Authorities have expressed condolences while also urging visitors to reflect seriously on the risks involved in off-piste activities. What Can Be Learned from This Tragedy? While no lesson can undo the loss of five lives, experts consistently highlight several key points: Respect avalanche warnings and bulletins These alerts are based on scientific analysis and real-time data, not guesswork. Understand that experience does not equal immunity Even skilled skiers can misjudge conditions. Stick to groomed slopes during high-risk periods Official ski runs are actively monitored and controlled. Avoid peer pressure and “powder fever” The desire for untouched snow can cloud judgment. Ultimately, the mountains will always involve risk — but informed decisions can mean the difference between life and death. A Sobering Reminder from the Mountains The Austrian Alps remain one of the world’s most spectacular winter destinations. Yet, as this heartbreaking weekend shows, they demand humility and respect. Nature does not negotiate, and it does not forgive recklessness. As investigations continue and families mourn their loved ones, the tragedy serves as a sobering reminder: adventure should never come at the cost of ignoring clear danger. For skiers and snowboarders everywhere, the message is painfully clear — no descent is worth a life.
By Muhammad Hassan3 days ago in Earth
Comments
There are no comments for this story
Be the first to respond and start the conversation.