A little science for everyone

Category: World demography expectancy

  • Energy balance atmosphere, crust, oceans

    Energy balance atmosphere, crust, oceans

    ©alberto.barbieri.ab@gmail.com e di ChatGPT 4.0                                                    08.24 11:17:58 1. Introduction to the Theme The Earth’s energy balance is a crucial concept for understanding how energy, mainly from the Sun, interacts with the Earth’s climate system. This balance takes into account all energy flows entering, reflected, absorbed and re-emitted into the atmosphere, the earth’s surface and the oceans.…

  • Bilancio Energetico Atmosfera, Crosta Terrestre, Oceani

    Bilancio Energetico Atmosfera, Crosta Terrestre, Oceani

    ©alberto.barbieri.ab@gmail.com e di ChatGPT 4.0                                                    08.24 11:17:58 1. Introduzione al Tema Il bilancio energetico della Terra è un concetto cruciale per comprendere come l’energia, principalmente proveniente dal Sole, interagisca con il sistema climatico terrestre. Questo bilancio tiene conto di tutti i flussi di energia entranti, riflessi, assorbiti e re-emessi nell’atmosfera, sulla superficie terrestre e negli oceani.…

  • WORLD POPULATION AND PERSPECTIVES

    WORLD POPULATION AND PERSPECTIVES

    UN Population Division https://www.un.org/development/desa/pd/ Demographic Profiles Population Pyramids  2025-20100 https://population.un.org/wpp/Graphs/DemographicProfiles/Pyramid/900 Probabilistic Projections Population https://population.un.org/wpp/Graphs/Probabilistic/POP/TOT/900 Probabilistic Projections Population Population Change https://population.un.org/wpp/Graphs/900 Probabilistic Projections Total Fertility Rate https://population.un.org/wpp/Graphs/900 World Population Prospects 2022 wpp2022_summary_of_results.pdf I. A century of world population trends: 1950 to 2050 The growth rate decreasing from 1.25 to 0.5 billions persons in the next 30 years. The number of persons increase from…

  • Anomalia crescita popolazione mondiale

  • SCARCITY AND STRESS FOR WATER IN THE WORLD

    The continued growth of the world’s population and the consequent increase in water use inevitably leads to a decrease in water availability. Water stress is the ratio between the water used and the available water. When consumption approaches the quantity of available reserves, it is called scarcity. Several countries in the Middle East and North…

  • Terra: acqua e popolazione

    Terra: acqua e popolazione

    L’acqua sul nostro pianeta è stimata in circa 1’409’560’910 km3 di volume. La suddivisione in compartimenti con caratteristiche diverse ed è descritta nel seguente link: https://www.usgs.gov/special-topics/water-science-school/science/where-earths-water Fonte d’acqua Percentuale di acqua totale Oceani, mari e baie 94.92318% Calotte glaciali, ghiacciai e neve permanente 1.70720% Acqua freatica 1.66009% Fresco 0.74704% Salino 0.91305% Umidità del suolo 0.00117%…

  • World: water and population

    World: water and population

    The water on our planet is estimated at about 1’409’560’910 km3 of volume. The breakdown into compartments with different characteristics and is described in the following link: https://www.usgs.gov/special-topics/water-science-school/science/where-earths-water Water source Percent of total water Oceans, Seas, & Bays 94.92318% Ice caps, Glaciers, & Permanent Snow 1.70720% Groundwater 1.66009% Fresh 0.74704% Saline 0.91305% Soil Moisture 0.00117%…

  • Poverty and Wealth in the WORLD

    Poverty and Wealth in the WORLD

    “Imagine a world with about 200 nations, each one unique. Each year, international organizations such as the World Bank collect and analyze data on these nations, helping to paint a picture of how things are changing over time. Recently, we looked at GDP (Gross Domestic Product) per capita data for 1990 and 2022, and divided…

  • Switzerland without young people

    Switzerland without young people

    https://www.vectorstock.com/royalty-free-vector/switzerland-of-black-contour-curves-vector-15655797 World The pyramid of the world’s population has a small base. However, from a general point of view, it presents a deficit for children and young people up to 25 years of age that can reasonably be corrected without huge sacrifices. The restoration of a compatible and sustainable demographic base for the population between…

  • Italians are disappearing

    Italians are disappearing

    Summary The population of any living species is in balance when the demographic profile is describable by a pyramidal figure in proportion. The following considerations relate in particular to the changes observed in the period 1913-2023. In the world, the human population has since 1990 a growing deficit at the base of the pyramid due…