Reference Terms
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Public health
Public health is concerned with threats to the overall health of a community based on population health analysis. Health is defined and promoted differently by many organizations. The World Health Organization, the United Nations body that sets standards and provides global surveillance of disease, defines health as: "A state of complete physical, mental and social well-being and not merely the absence of disease or infirmity." The population in question can be as big as a handful of people or, in the case of a pandemic, whole continents. Public health has many sub-fields, but is typically divided into the categories of epidemiology, biostatistics and health services. Environmental, social and behavioral health, and occupational health, are also important fields in public health.
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Science & Society News
April 26, 2026
Apr. 25, 2026 Beneath East Africa’s Turkana Rift, scientists have found the crust is thinning to a critical point, suggesting the continent is gradually breaking apart. This “necking” process marks an ...
Apr. 23, 2026 A newly confirmed mass grave in ancient Jordan offers chilling insight into one of history’s first pandemics. Hundreds of plague victims were buried within days, revealing how the Plague of Justinian devastated entire communities. The findings ...
Apr. 21, 2026 A light-sensitive crystal is opening the door to a new era of “light-written” technology. Arsenic trisulfide can be reshaped and permanently altered using simple light, creating ultra-fine optical patterns without expensive manufacturing tools. ...
Apr. 20, 2026 AI-powered personas are becoming so realistic that they can infiltrate online communities and subtly steer public opinion. Unlike traditional bots, they adapt, coordinate, and refine their messaging at a massive scale, creating a false sense of ...
Apr. 19, 2026 Human societies didn’t just adapt to the planet—they learned to reshape it. From early fire use to today’s global supply chains, our cultural and social innovations have unlocked extraordinary power to transform Earth and improve human life. ...
Apr. 19, 2026 Calling AI things like “smart” or saying it “knows” something might sound harmless, but it can quietly mislead people about what AI actually does. A new study shows that news writers are more careful than expected, rarely using strongly ...
Apr. 16, 2026 The ozone layer has been on track to recover thanks to the Montreal Protocol—but a loophole may be holding it back. Chemicals still permitted for industrial use are leaking into the atmosphere at higher rates than expected. Scientists now estimate ...
Apr. 9, 2026 Earth’s nights are steadily getting brighter overall, but the changes vary dramatically by region. Rapid urban growth is lighting up countries like China and India, while parts of Europe are dimming due to energy-saving efforts and new lighting ...
Apr. 5, 2026 Modern food systems may look stable on the surface, but they are increasingly dependent on digital systems that can quietly become a major point of failure. Today, food must be “recognized” by databases and automated platforms to be transported, ...
Mar. 29, 2026 Scientists may have been unknowingly inflating microplastics pollution estimates, and the surprising source could be their own lab gloves. A University of Michigan study found that common nitrile and latex gloves release tiny particles called ...
Mar. 23, 2026 People often get the environmental impact of food wrong, according to new research. While many assume processed foods are the worst, they tend to overlook the surprisingly high impact of items like nuts and underestimate how damaging beef really is. ...
Mar. 15, 2026 Artificial intelligence is often portrayed as a tool that replaces human work, but new research from Swansea University suggests a far more exciting role: creative collaborator. In a large study with more than 800 participants designing virtual ...
Latest Headlines
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Apr. 26, 2026 Scientists have uncovered a surprising new picture of human origins that challenges the long-held idea of a single ancestral population in Africa. By analyzing genetic data from diverse modern ...
Apr. 22, 2026 Ancient DNA from a tomb near Paris reveals a shocking prehistoric reset: one population vanished and was replaced by newcomers from the south. The two groups show no genetic connection, signaling a ...
Apr. 9, 2026 Scientists have uncovered compelling evidence that humans reached New Guinea and Australia around 60,000 years ago—earlier than some recent theories suggested. By tracing maternal DNA lineages, the ...
Apr. 8, 2026 Early wheat didn’t just grow—it fought. When humans began cultivating fields, plants that could outcompete their neighbors for sunlight and space quickly took over, evolving upright leaves and ...
Apr. 8, 2026 A new international study is shaking up how we think about elite sprinting, arguing there’s no single “perfect” running style behind the world’s fastest athletes. Instead, speed emerges from ...
Apr. 5, 2026 A massive new analysis of over 1,700 languages shows that some long-debated “universal” grammar rules are actually real. By using cutting-edge evolutionary methods, researchers found that ...
Apr. 5, 2026 A hidden Roman sanctuary discovered beneath Frankfurt is offering rare clues about ancient rituals, including possible human sacrifice. With major ...
Apr. 2, 2026 More than 12,000 years ago, Native American hunter-gatherers were already making and using dice—thousands of years before similar tools appeared elsewhere. These bone “binary lots” acted like ...
Apr. 2, 2026 A mysterious Greek inscription found beneath the Great Mosque of Homs could pinpoint the long-debated location of an ancient sun temple. Scholars now ...
Mar. 29, 2026 A team of physicists set out to test some of the most exciting claims in quantum computing—and found a very different story. Instead of confirming breakthroughs, their careful replication studies ...