In human demography and population studies, “population (human)” refers to the total set of individuals of Homo sapiens occupying a defined spatial, temporal, or social frame, serving as the primary unit of analysis for topics such as fertility, mortality, migration, and population structure. Research addresses population size, age–sex composition, density, spatial distribution, and dynamic processes governed by demographic rates and transitions. Human populations are modeled using formal demographic methods (e.g., life tables, stable and multistate population models) and are central to analyses of population growth, demographic transitions, population health, urbanization, and the interaction between human numbers and economic, environmental, and social systems.
A new international study published in Nature Food reveals that age plays an important but often overlooked role in shaping global food-related greenhouse gas emissions. The study shows that dietary emissions can vary substantially ...
Environment
7 hours ago
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Residents of Salt Lake County, Utah, are highly concerned about the shrinking Great Salt Lake, according to new University of Utah–led research examining local perceptions of the lake's health and its economic and environmental ...
Environment
Jul 21, 2026
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A study predicts increasing human-elephant conflict in Southern Africa. A growing number of farmers and 290,000 African savanna elephants (Loxodonta africana) share space in Southern Africa, with conflicts arising from elephants ...
Ecology
Jul 7, 2026
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A major new resource that provides one of the most comprehensive pictures yet of what people are eating around the world has been introduced in a new study by a UCL and University of Oxford researcher.
Environment
Jul 6, 2026
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A new study, published July 6, 2026, in the journal Nature Communications, suggests that two of the best-known trends in human evolution—brain growth and the reduction in the size of the face and jaw—may be far less attributable ...
Evolution
Jul 6, 2026
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Researchers are sharing lessons from the unprecedented Stanley Park coyote attacks from 2020 to 2021 to help people better coexist with urban wildlife.
Plants & Animals
Jul 6, 2026
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For millennia, farming in Switzerland did not reduce plant diversity but helped increase it, University of Basel researchers have shown in a detailed reconstruction covering the past 7,000 years. Only recent decades paint ...
Ecology
Jun 30, 2026
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An estimated 25%–40% of homes in the U.S. have soil contaminated with lead, a toxic heavy metal that can harm children's development. Public health researchers know that the risk is higher in places with a legacy of industrial ...
Environment
Jun 22, 2026
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People living in regions with lower scores on the Human Development Index face a substantially higher risk from climate-related disasters, even when these are not unusually severe. This is the key finding of a new study led ...
Environment
Jun 18, 2026
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The cause of future food shortages may not be a lack of farmland, but a shortage of agricultural workers. Amid low birth rates and rural decline, a joint international research team from KAIST has developed a new data-driven ...
Agriculture
Jun 18, 2026
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