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27episodes
Episodes
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Balancing Safety: Rethinking Prevention and Mitigation in a Complex World
1w ago00:09:13Tap to summarizeIn the world of nuclear energy, safety is not a single switch that can be turned on or off. It is a layered, evolving philosophy shaped by decades of engineering, research, and experience. At the heart of this philosophy lie two deceptively simple ideas: prevention and mitigation. These terms sound straightforward, yet their meaning becomes far more intricate when applied to modern reactor systems. The paper authored by Karl Fleming of KNF Consulting Services, and colleagues, invites us to rethink what these concepts truly mean, especially as nuclear technology advances into new territory.
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Seeing the Invisible: How Polarized Light Contributes to Our Understanding and Detection of Cancer
2w ago00:15:21Tap to summarizeLight is something we encounter every day, so familiar that it rarely inspires a second thought. Yet beneath its apparent simplicity lies a remarkable complexity. Light can carry information in its brightness and color, but also in its polarization and phase, subtle properties that describe how its waves oscillate and interact. For decades, these hidden dimensions of light have remained largely untapped in medicine. Now, a growing body of research is beginning to reveal their extraordinary potential.
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When Standing Up Knocks You Down: Why Postural Hypotension Goes Unnoticed
2w ago00:10:19Tap to summarizeImagine standing up from a chair and feeling a sudden wave of dizziness, as though the floor beneath you has shifted. For many older adults, this is more than just an occasional inconvenience, it’s a recurring problem linked to a condition called postural hypotension. Despite being relatively common, postural hypotension is surprisingly overlooked. It affects between 20-30% of older adults living in the community, yet is officially recorded in only about 1% of patients’ medical records in general practice. That gap is vast, and it carries real consequences: increased risks of falls, strokes, heart problems, and reduced quality of life.
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The Secret Life of the Margay in Peru’s Rainforest
2w ago00:11:59Tap to summarizeDeep in the Amazon rainforest of southeastern Peru, one of the world's most elusive wild cats slips silently through the trees. Smaller than a jaguar and far less famous than a tiger, the margay is a master of the canopy, moving through tangled branches with extraordinary agility. For decades, scientists have struggled to understand this mysterious feline because it is rarely seen, mostly active at night, and equally comfortable on the ground and high above it. Now, a new study conducted by Dr. Samantha Zwicker of Hoja Nueva, a conservation nonprofit rooted in Madre de Dios, Peru, and colleagues, is shedding light on the hidden world of the margay in the Madre de Dios region of Peru. By combining ground cameras with lower-canopy cameras placed at natural margay choke points, the team captured both sides of cats moving up and down trees - a practical, lower-cost alternative to labor-intensive upper-canopy surveys.
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On the Front Lines of a Pandemic: Sierra Leone’s Field Epidemiology Training Program Success Story
3w ago00:14:18Tap to summarizeIn early 2020, as headlines around the world warned of a fast-spreading new virus, Sierra Leone watched with a mixture of concern and determination. The country had not forgotten the devastating Ebola outbreak of 2014 to 2015, which had exposed painful weaknesses in disease detection, surveillance, and emergency response. That experience left deep scars, but it also sparked reform. When COVID-19 began its global sweep, Sierra Leone faced the crisis with a stronger foundation than many might have expected.
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Quand la chaleur rencontre la route: comment la hausse des températures modifie la sécurité routière en milieu urbain
3w ago00:10:15Tap to summarizeLors d’une journée d’été étouffante, la plupart d’entre nous remarquent les effets évidents de la chaleur. Nous nous sentons plus lents, plus irritables et impatients d’échapper au soleil. Ce qui est moins visible, c’est la manière dont ces mêmes conditions modifient discrètement notre comportement au volant. Une étude récente dirigée par le professeur José Ignacio Nazif-Muñoz de l’Université de Sherbrooke, en collaboration avec le professeur Jose Guillermo Cedeño Laurent de l’Université Rutgers, explore ce lien caché, révélant comment les vagues de chaleur et les modèles thermiques urbains influencent la sécurité routière dans cinq villes du Québec. Les résultats rappellent opportunément que le changement climatique n’est pas seulement un enjeu environnemental, mais aussi une question de sécurité publique qui touche la vie quotidienne de manière inattendue.
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From Silence to Survival: 150 Years of Laryngectomy and the Future of Voice
4w ago00:08:44Tap to summarizeIn the late nineteenth century, medicine stood at a threshold between desperation and discovery. Cancer of the larynx, the structure that gives us voice and guards our airway, was almost always fatal. Surgeons had few tools and even fewer successes. Then, in 1873, a bold and controversial operation changed everything. Theodor Billroth performed the first total laryngectomy, removing the entire voice box in a human patient. It was a radical act that saved a life, but at the cost of speech and natural breathing. That moment marked the beginning of a long and evolving journey in head and neck cancer care.
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The Financial Economist Who Tried to Fix Capitalism Twice
4w ago00:17:47Tap to summarizeMichael Jensen spent much of his life asking one of the most important questions in modern business: What makes companies work well, and what causes them to fail? For decades, his ideas shaped how corporations were managed, how executives were paid, and how investors judged success. Some praised him as one of the most influential thinkers in modern finance. Others blamed his theories for encouraging corporate greed, soaring executive compensation, and an obsession with shareholder value. Few economists have had such a powerful influence on the financial world.
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Invisible Hazards: How Water Shapes the Safety of Hydroponic Food
4w ago00:09:15Tap to summarizeAt first glance, hydroponic farming seems like the future made real. Rows of leafy greens grow indoors, roots suspended in carefully balanced nutrient solutions, untouched by soil and shielded from many of the uncertainties of outdoor agriculture. This method promises efficiency, precision, and sustainability. It uses far less water than traditional farming and produces food in tightly controlled environments. Yet beneath this clean and modern image lies a quieter story about risk, one that flows through the very water that sustains these crops.
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Listening to Moving Fluids: How Sound Waves Reveal Hidden Worlds
4w ago00:10:25Tap to summarizeIt would be difficult to understand the movement of water in a murky lake, or the swirling air inside a sealed chamber, without being able to see inside. For decades, scientists have relied on clever tricks to peer into such opaque environments, often adding particles or using optical techniques. But what if the fluid is too dark, too enclosed, or too delicate for those methods? A new approach, developed by researchers Lennart Kira and Dr. Jerome Noir of ETH Zurich, offers a compelling answer. It listens instead of looks.
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