Episodes

  • Counter-urbanisation
    Feb 3 2026

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    Counter-urbanisation, also known as de-urbanisation, refers to the movement of people and economic activities away from major cities and into suburban or rural areas. This process represents a significant reversal of the traditional urbanisation trend that dominated the 19th and 20th centuries, where people migrated in large numbers from rural areas to cities in search of employment and opportunities. Counter-urbanisation has gained considerable prominence in recent decades, particularly in More Economically Developed Countries (MEDCs), as a response to various push and pull factors. This demographic shift has had notable and far-reaching effects on society, the economy, and the environment as rural populations increase and the character of these areas transforms.

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    13 mins
  • Urbanisation in the 20th and 21st Centuries
    Jan 27 2026

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    Urbanisation is the process by which an increasing proportion of a country’s population comes to live in towns and cities rather than in rural areas. This process has been one of the most powerful forces shaping society during the 20th and 21st centuries. It has changed where people live, how they work, and how they interact with the natural environment.

    In 1900, only about 16% of the world’s population lived in urban areas. By 1960 this had risen to 34%, and by 2040 it is expected to reach around 67% — meaning two-thirds of all people will live in cities or towns. The shift has been global but has taken place at different speeds in different regions.

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    9 mins
  • Moisture in the air
    Jan 20 2026

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    Moisture in the Air - From Invisible Vapour to Wild Weather

    Atmospheric moisture is all about how water moves between the surface and the air, constantly cycling through evaporation, condensation, clouds and precipitation. Think of the atmosphere as a leaky storage tank whose capacity depends strongly on temperature: warm air can hold a lot of water vapour, while cold air can only hold a little.​


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    17 mins
  • Impacts of Changing Precipitation on Hydrological Processes in Different Types of Drainage Basins
    Jan 13 2026

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    Climate change is now widely accepted as one of the biggest global challenges, influencing not only temperatures but also how water moves through the environment. Around the world, patterns of rainfall and snowfall—known collectively as precipitation—are changing. These shifts affect rivers, lakes, groundwater, and even the timing of floods and droughts.

    Precipitation changes can vary by region: some areas are becoming wetter, while others are drying out. These changes have strong effects on drainage basins, the land areas where all the water that falls eventually drains into a river or lake. The way a drainage basin reacts to changing precipitation depends on its climate, geology, vegetation, and human activity. Scientists are studying these systems to predict how rainfall changes might affect river flow, groundwater levels, and overall water balance in places such as deserts, temperate plains, rainforests, and mountains.

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    13 mins
  • Geography of Oil
    Jan 9 2026

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    Venezuela and the Global Geography of Oil

    Oil, often referred to as “black gold,” is one of the most crucial resources in our modern world. Understanding its geography can help us grasp its impact on economies, politics, and our environment. This introduction will explore where oil is found, how it is extracted, and its significance on a global scale.


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    14 mins
  • Counting the heads
    Jan 8 2026

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    Collecting Population Data in Developed and Developing Countries

    Counting the heads

    Accurate population data is a fundamental resource for governments worldwide, whether in developed or developing countries. It provides essential insights into the size, distribution, and characteristics of populations, enabling informed decision-making and effective planning across multiple sectors.

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    7 mins
  • The Global Carbon Budget
    Jan 7 2026

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    This podcast examines how well the world is doing, cutting carbon emissions.

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    4 mins
  • Deforestation in the Rainforest
    Dec 30 2025

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    Rainforest deforestation is not confined to the Amazon
    Rainforest deforestation is not just a problem in the Amazon; it affects tropical forests across the globe. In 2024 and 2025, record-breaking deforestation has been reported in Southeast Asia, Central Africa, and other parts of South America. For example, Indonesia and Malaysia have seen their primary rainforest losses slow, but the Congo Basin, which contains the world’s second-largest rainforest after the Amazon, has reached its highest-ever rates of untouched forest loss. Agricultural expansion for crops like soy and palm oil, cattle ranching, illegal logging, and especially wildfires driven by climate change have been key causes. In Bolivia, forest loss has increased almost fivefold since 2020, driven by drought, fires, and policies promoting cash crops and livestock.​

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    7 mins