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Showing posts older than #4531 · Back to latest

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Post #4530 99
Scientists say we’ve been looking in the wrong place for human origins
A fossil ape discovered in northern Egypt is reshaping the story of human evolution. The species, Masripithecus, lived about 17 to 18 million years ago and may sit ve…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-28 11:06 GMT+8（北京时间）
ScienceDaily Scientists say we’ve been looking in the wrong place for human origins A fossil ape discovered in northern Egypt is reshaping the story of human evolution. The species, Masripithecus, lived about 17 to 18 million years ago and may sit very close to the ancestor of all modern apes. This finding challenges the long-standing focus…
Post #4529 125
海洋物种消失得比科学家们找到的还快
海洋物种正在消失得比科学家们能够发现它们更快，国际团队正在努力在欧洲海洋中发现隐藏的生命，建立一个开放式基因组数据库。这类小但至关重要的生物帮助维持海洋生态系统的运转——循环养分、混合沉积物、传递污染信息。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-27 19:44 GMT+8（北京时间）
#海洋物种 #基因组数据库 #欧洲海洋
ScienceDaily Ocean species are disappearing before scientists can even find them Species are vanishing faster than ever, and many are disappearing before scientists even know they exist. Now, an international team is racing against time to uncover hidden life beneath the waves by building a massive open-access genomic database of European…
Post #4528 81
Scientists find gut bacteria inject proteins that control your immune system
Gut bacteria aren’t just passive passengers—they can actively send proteins straight into our cells. Using microscopic injection systems, even harmless microbes can i…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-27 20:23 GMT+8（北京时间）
ScienceDaily Scientists find gut bacteria inject proteins that control your immune system Gut bacteria aren’t just passive passengers—they can actively send proteins straight into our cells. Using microscopic injection systems, even harmless microbes can influence immune responses and metabolic pathways. Researchers found these interactions may…
Post #4527 89
科学家揭示癌症药物为什么对每个人都有效
科学家们发现癌症治疗药物在肿瘤细胞中的作用不均匀是因为某些药物会被囚禁在细胞的溶酶体中，形成缓释储存库，这导致某些癌细胞暴露于药物中，而其他癌细胞则几乎没有受到影响。了解这一过程可以帮助医生更好地定制治疗方案并改善治疗效果。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-27 20:31 GMT+8（北京时间）
#癌症 #药物 #溶酶体
ScienceDaily Scientists discover why cancer drugs don’t work for everyone Scientists have uncovered a hidden reason why cancer treatments don’t work equally well for everyone. Certain drugs can become trapped inside lysosomes within tumor cells, forming slow-release reservoirs that create uneven drug distribution. This means some…
Post #4526 77
常见补充剂可能增加新生儿缺陷风险，研究发现
研究表明，高剂量抗氧化剂可能对后代产生影响，男性小鼠服用常见补充剂如NAC后，其后代出现了微妙但显著的面部和颅骨变化。研究人员认为，这与父亲的精子DNA变化有关，尽管父亲没有表现出任何健康问题。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-27 20:41 GMT+8（北京时间）
#NAC #抗氧化剂 #新生儿缺陷 #基因变异
ScienceDaily This popular supplement may increase risk of birth defects, study finds A new study reveals that high doses of antioxidants—often seen as harmless or beneficial—may actually impact future generations. Male mice given common supplements like NAC produced offspring with subtle but significant facial and skull changes. Researchers…
Post #4525 109
淡水鱼种群下降81%：河流迁徙崩溃
一项全球报告发现，迁徙性淡水鱼类数量大幅下降，自1970年以来下降约81%。这些物种依赖于长期连续的河流，但水坝和人类压力正在切断它们的路线。目前有数百种物种需要协调的国际保护。专家认为，恢复河流连通性对于防止进一步崩溃至关重要。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-27 09:51 GMT+8（北京时间）
#淡水鱼 #河流迁徙 #水坝 #物种保护
ScienceDaily Freshwater fish populations plunge 81% as river migrations collapse A sweeping global report finds that migratory freshwater fish are in steep decline, with populations down roughly 81% since 1970. These species depend on long, connected rivers, but dams and human pressures are cutting off their routes. Hundreds of species…
Post #4524 113
科学家找到了蜜蜂缺乏的营养素 —— 蜂群激增 15 倍
科学家们通过工程酵母来生产通常在花粉中发现的必需营养素，开发了蜜蜂的“超级食物”。在受控试验中，喂养了这种特别设计的饮食的蜂群产量增加了 15 倍，表现出显著的繁殖和整体健康增强。随着气候变化和现代农业减少自然花粉的可用性，这项…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-27 12:17 GMT+8（北京时间）
#蜜蜂 #酵母 #超级食物 #花粉 #气候变化
ScienceDaily Scientists uncovered the nutrients bees were missing — Colonies surged 15-fold Scientists have developed a breakthrough “superfood” for honeybees by engineering yeast to produce the essential nutrients normally found in pollen. In controlled trials, colonies fed this specially designed diet produced up to 15 times more young, showing…
Post #4523 86
你体内的这个危险组合可能会让死亡风险增加83%
拥有过多的腹部脂肪和低肌肉质量的状态不仅不健康，还可能致命，死亡风险增加83%。这种称为肌肉萎缩肥胖的状态会导致脂肪加剧肌肉分解和炎症。研究人员发现，可以使用简单的测量方法来识别这种情况，而不需要昂贵的医疗检查。这意味着可以更早…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-27 13:23 GMT+8（北京时间）
#肌肉萎缩肥胖 #死亡风险 #腹部脂肪 #肌肉质量
ScienceDaily This dangerous combo in your body could raise death risk by 83% Having both excess belly fat and low muscle mass isn’t just unhealthy—it’s potentially deadly, raising the risk of death by 83%. This condition, called sarcopenic obesity, creates a vicious cycle where fat accelerates muscle breakdown and inflammation. Researchers…
Post #4522 88
倡导包容性健康政策的进步：难民和移民的健康需求得到重视
世卫组织报告称，全球有超过60个国家（占调查国家总数的三分之二）将难民和移民纳入了他们的国家健康政策和法律中，表明国家对他们的健康需求有了重大转变。
来源: WHO ｜ 阅读全文
发布时间: 2026-03-26 16:50 GMT+8（北京时间）
#世卫组织 #难民 #移民 #健康政策
World Health Organization Encouraging progress in inclusive health policies for refugees and migrants WHO reports a major shift in how countries are responding to the health needs of refugees and migrants, with new data showing more than 60 countries – two thirds of those surveyed – now include them in their national health policies and laws.
Post #4521 61
深度造假X光片：医生都无法分辨真假
通过AI生成的深度造假X光片已达到如此真实程度，甚至医生和AI模型都难以识别真伪。实验结果表明，放射学家在识别假图片时表现不佳，尤其是在不知道自己正在看假图片的情况下。这一发现敞开了诸如伪造医疗索赔和篡改诊断的风险。专家表示，随…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 18:42 GMT+8（北京时间）
#深度造假 #X光片 #AI #医生 #识别
ScienceDaily Deepfake X-rays are so real even doctors can’t tell the difference Deepfake X-rays created by AI are now convincing enough to fool both doctors and AI models. In tests, radiologists had limited success identifying fake images, especially when they didn’t know they were being shown. This opens the door to risks like fraudulent…
Post #4520 67
科学家发现与长期COVID疲劳和症状相关的免疫细胞
长期COVID仍然是一个令人沮丧的医学谜团，影响了1/10的人群长期感染后。现在，科学家们在免疫系统的深处发现了一个关键线索。通过分析个体的免疫细胞，他们在关键的白细胞中找到了一个独特的分子状态——尤其是在最初有轻微或中度COVID的患…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 19:06 GMT+8（北京时间）
#长期COVID #免疫细胞 #白细胞 #COVID19
ScienceDaily Scientists find immune cell linked to long COVID fatigue and symptoms Long COVID remains a frustrating medical mystery, affecting up to 1 in 10 people long after the initial infection fades. Now, scientists have uncovered a crucial clue hidden deep within the immune system. By analyzing individual immune cells, they identified…
Post #4519 46
中年时的行为可能预示着你将活多久
研究人员通过长期监测鱼类的行为发现，中年时的简单行为，如活动和睡眠，能预测寿命。那些保持活跃并且多睡觉的鱼类寿命更长，而那些早期减速的鱼类寿命更短。令人惊讶的是，衰老并非平稳进行，而是突然跃入不同的阶段。研究结果表明，跟踪人类的…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 19:18 GMT+8（北京时间）
#寿命 #中年 #行为 #衰老 #鱼类
ScienceDaily What you do in midlife could reveal how long you’ll live By closely monitoring fish throughout their lives, researchers found that simple behaviors in midlife—like movement and sleep—can predict lifespan. Fish that stayed active and slept mostly at night tended to live longer, while those slowing down earlier lived…
Post #4518 61
科学家发现细胞中的“过载阀”与帕金森病有关
研究人员发现了一种关键的离子通道，TMEM175，它在细胞的回收系统中起到“过载阀”的作用，调节细胞内的酸度，确保溶酶体正常工作。当TMEM175出现故障时，毒性积累可能发生，导致疾病如帕金森病。这一突破揭示了未来治疗的新目标。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 19:35 GMT+8（北京时间）
#TMEM175 #帕金森病 #细胞回收系统
ScienceDaily Scientists discover “overflow valve” in cells linked to Parkinson’s Disease Researchers have identified a crucial ion channel, TMEM175, that acts like an overflow valve in the cell’s recycling system. It regulates acidity inside lysosomes, ensuring they function properly. When TMEM175 is faulty, toxic buildup can occur, contributing…
Post #4517 75
一头牛用工具像灵长类动物一样——科学家震惊
一头名为Veronika的奶牛惊呆了科学家，她用工具的方式非常灵活和有目的。 她会根据身体不同部位选择工具的不同端，调整自己的动作。 这种工具使用的水平非常罕见，主要在灵长类动物中见到。 这一发现暗示奶牛可能比我们想象的要聪明得多。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 20:28 GMT+8（北京时间）
#奶牛 #工具使用 #灵长类动物
ScienceDaily This cow uses tools like a primate—and scientists are stunned A cow named Veronika has stunned scientists by using tools in a flexible and purposeful way. She chooses different ends of a brush depending on the part of her body and adjusts her movements accordingly. This level of tool use is incredibly rare and was previously…
Post #4516 124
寒冷天气每年在美国导致4万多例心脏死亡
研究表明，当温度下降时，心脏风险会大幅增加。美国的大型研究发现，寒冷天气导致的心脏死亡人数远远高于热天气，每年都有数万例额外死亡。科学家发现，安全温度大约在74°F（22.2°C），当温度越来越冷或越来越热时，危险就会增加。随着越来越多…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 09:11 GMT+8（北京时间）
#寒冷 #心脏死亡 #气温 #健康
ScienceDaily Cold weather linked to 40,000 extra heart deaths each year in the U.S. When temperatures plunge, the risk to your heart rises dramatically. A large U.S. study shows cold weather is linked to far more cardiovascular deaths than heat, accounting for tens of thousands of extra deaths each year. Scientists found the safest temperature…
Post #4515 131
Vivid dreams may be the secret to deeper, more restful sleep
Vivid dreams might be doing more than just entertaining your mind at night. Researchers found that immersive dreaming can actually make sleep feel deeper and more ref…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 14:00 GMT+8（北京时间）
ScienceDaily Vivid dreams may be the secret to deeper, more restful sleep Vivid dreams might be doing more than just entertaining your mind at night. Researchers found that immersive dreaming can actually make sleep feel deeper and more refreshing, even when brain activity is high. Surprisingly, people reported their deepest sleep…
Post #4514 127
大多数质谱仪只能处理几个分子。这款新原型可以处理十亿分子
一款新原型将质谱技术提升到新的高度，能够同时分析数千个分子，而不是一个一个地分析。这种突破足以揭示罕见的分子，潜在地改变药物发现和单细胞生物学等领域
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 09:30 GMT+8（北京时间）
#质谱仪 #分子分析 #药物发现 #单细胞生物学
ScienceDaily Most mass spectrometers handle a few molecules. This new prototype handles billions A new prototype could supercharge mass spectrometry by analyzing thousands of molecules at once instead of one by one. The breakthrough boosts sensitivity enough to reveal rare, hidden molecules—potentially transforming fields like drug discovery and single…
Post #4513 87
科学家在新西兰开启一百万年前的时钟盒
科学家在洞穴中挖掘出来自16种物种的化石，包括一种可能能飞行的新发现的喙嘴雀祖先。这些化石揭示新西兰的生态系统在火山爆发和快速气候变化中不断受到打击。人类之前，灭绝和替代浪潮不断重塑岛屿的野生动物。它是自然历史的一个罕见的窗…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 12:58 GMT+8（北京时间）
#新西兰 #化石 #喙嘴雀 #火山爆发 #气候变化
ScienceDaily Scientists open a million-year-old time capsule beneath New Zealand Deep inside a cave, scientists uncovered fossils from 16 species, including a newfound kākāpō ancestor that may have been able to fly. These remains reveal that New Zealand’s ecosystems were constantly disrupted by volcanic eruptions and rapid climate shifts.…
Post #4512 61
科学家发现一种能自我产生热量的雪蛾
雪蛾通过产生抗冻蛋白来阻止冰晶形成，并且还能自我产生热量。科学家发现雪蛾的基因非常独特，且比其他昆虫更不易感到寒冷。这些特性使得雪蛾能够在极其寒冷的环境中保持活跃。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-26 13:26 GMT+8（北京时间）
#雪蛾 #抗冻蛋白 #自我产生热量 #基因独特
ScienceDaily Scientists found a bug that generates its own heat in freezing cold Snow flies have an unexpected way of surviving freezing temperatures. They produce antifreeze proteins to block ice formation and can even generate their own heat. Scientists also found that their genes are unusually unique, and they feel less cold-related…
Post #4511 70
慢性炎症留下肠道干细胞的长期印记，增加结肠癌风险
一项由 NIH 资助的动物研究发现，炎症停止后，细胞记忆仍然存在，持续数月。研究结果表明，慢性炎症可能是结肠癌的风险因素之一。
来源: NIH ｜ 阅读全文
#慢性炎症 #肠道干细胞 #结肠癌 #细胞记忆
National Institutes of Health (NIH) Chronic inflammation leaves long-lasting impression on gut stem cells, increasing colorectal cancer risk NIH-funded animal study finds heritable memories of damage persisted in cells months after inflammation ceased.
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