Welcome to Urban Issues and Challenges!
In this chapter, we are going to explore why more people than ever are moving into cities and what happens when they get there. Whether it is a massive megacity like Lagos or a historic UK city like London, urban areas are constantly changing. We will look at the amazing opportunities cities create, but also the big problems like traffic, waste, and housing that leaders have to solve. Geography is all about how we live together, and there is no better place to see that than in a busy city!
1. A Growing Urban World
Urbanisation is the simple word for the increase in the percentage of people living in towns and cities. This is happening all over the world, but it’s happening at different speeds in different places.
HICs vs. LICs: The Great Divide
- Higher Income Countries (HICs): Most people already live in cities here. The rate of urbanisation is very slow because the movement happened decades ago (like in the UK or USA).
- Lower Income Countries (LICs) and Newly Emerging Economies (NEEs): This is where the fastest urban growth is happening. Many people are moving from the countryside to cities in search of a better life.
Why are cities growing?
There are two main reasons for urban growth:
1. Natural Increase: This happens when the birth rate is higher than the death rate. Because cities often attract young people, they are more likely to have children, which grows the population naturally.
\( \text{Birth Rate} - \text{Death Rate} = \text{Natural Increase} \)
2. Migration (Push-Pull Theory): People move because of "Push" factors (bad things about where they live) and "Pull" factors (good things about the city).
- Push Factors: Farming is hard work with low pay, drought, or lack of schools and hospitals in the countryside.
- Pull Factors: Better-paid jobs, better schools, "bright lights" of the city, and better healthcare.
The Rise of Megacities
A megacity is a city with a population of over 10 million people. In 1950, there were only two (New York and Tokyo). Now, there are over 30, and most of them are in LICs and NEEs!
Quick Review: Urbanisation is fastest in LICs/NEEs because of high migration and young populations having children.
2. Urban Growth in LICs and NEEs
Urban growth in countries like Nigeria, Brazil, or India creates a mix of "Big Wins" and "Big Problems." You will need to use a case study (like Rio de Janeiro or Lagos) for this in your exam.
Opportunities (The "Big Wins")
- Social: More people can access doctors and schools than they could in a remote village. Cities often have better water and electricity supplies.
- Economic: Cities are "engines of growth." They have factories, offices, and shops that provide jobs and help the whole country get richer.
Challenges (The "Big Problems")
When a city grows too fast, it can't keep up. This leads to:
- Slums and Squatter Settlements: People build their own houses out of scrap materials on land they don’t own. These are often crowded and dangerous.
- Service Issues: Not enough clean water, sewers, or electricity for everyone.
- Health and Education: Hospitals and schools become overfilled.
- Environmental Problems: Traffic congestion causes air pollution; there is often too much waste/rubbish to collect, and water becomes polluted by sewage.
Urban Planning: To help the urban poor, some cities use Self-help schemes (giving people materials to improve their own homes) or Site and Service schemes (where the government provides the land and basic pipes, and people build the house).
Key Takeaway: LIC cities grow so fast that they struggle to provide basic needs, but they are still the best place for many people to find work.
3. Urban Change in the UK
The UK's population is mostly urban. Most of our major cities (like Birmingham, Manchester, and Leeds) are in the lowlands or near coalfields where factories used to be.
Your UK Case Study
You need a UK city case study (like London, Bristol, or Liverpool). Here is what you need to know about it:
- Importance: How does the city help the UK and the world? (e.g., London is a global financial hub).
- Migration: People moving into the city from the UK and abroad makes the city more diverse and changes its character.
- Opportunities: Cities offer a "cultural mix" (different foods and music), great recreation (theatres, stadiums), and integrated transport systems (where buses, trains, and bikes all work together).
- Urban Greening: This is about making the city "green" by adding parks and planting trees on old buildings.
UK Urban Challenges
Don't worry if this seems like a long list—most of these are things you see in the news every day!
- Urban Deprivation: Some areas become poor as old industries close down, leading to high unemployment.
- Inequalities: Huge differences in wealth, health, and education between the richest and poorest parts of the city.
- Dereliction: Abandoned buildings and factories (brownfield sites) that look ugly and can be dangerous.
- Waste Disposal: Where do we put all the rubbish from millions of people?
- Urban Sprawl: The city "spreading out" into the countryside, taking over greenfield sites. This leads to more commuter settlements (places where people live but travel far to work).
Urban Regeneration
This is when a run-down area is "re-born." Governments spend money to build new shops, offices, and homes on brownfield sites to attract people back to the area. (Think of the Olympic Park in London!).
Quick Review: UK cities are dealing with the "leftovers" of old industry by cleaning up derelict land and trying to stop the city from eating up the countryside.
4. Sustainable Urban Living
To be sustainable means living in a way that doesn't ruin things for the people of the future. Sustainable cities try to use less and recycle more.
Features of Sustainable Living
- Water Conservation: Using rainwater to flush toilets or fixing leaks.
- Energy Conservation: Using solar panels and making sure houses are well-insulated to keep heat in.
- Waste Recycling: Reducing what we send to landfills by recycling plastic, paper, and food.
- Creating Green Space: Parks aren't just for looks! They act as "lungs" for the city, cooling it down and helping people stay healthy.
Traffic Congestion
Traffic is a nightmare for sustainability because it creates pollution and wastes time. Cities use transport strategies to fix this:
- Public Transport: Trams, buses, and underground trains that carry hundreds of people at once.
- Cycle Lanes: Encouraging people to bike instead of drive.
- Congestion Charges: Making people pay a fee to drive into the city center.
- Park and Ride: Parking your car on the edge of the city and taking a bus to the center.
Key Takeaway: A sustainable city balances the needs of people today without destroying the environment for tomorrow.
Common Mistake to Avoid:
Don't confuse Brownfield and Greenfield!
Brownfield: Land that has been built on before (like an old factory). Usually in the city.
Greenfield: Land that has never been built on (like a farm or forest). Usually in the countryside.
Did you know?
By 2050, it is estimated that 7 out of every 10 people on Earth will live in a city. That's why solving these urban challenges is so important!