Two countries can face exactly the same storm and end up with completely different outcomes. That gap — between the hazard and what it actually does to people — is what this page is really about, and it is where the higher marks in ESS live.
📚 What you need to know
Climate change affects societies at different scales, and the damage depends on socio-economic conditions: income, resources, infrastructure, education and healthcare.
The four areas to know are health, water supply, agriculture and infrastructure.
Resilience is a society’s ability to withstand, adapt to and recover from those impacts.
Resilience depends on economic stability, social equity and adaptive capacity.
Impacts are not all negative — some regions gain longer growing seasons — but the losses fall hardest on those least able to absorb them.
Perspectives on climate change are shaped by personal experience, government policy, community action and cultural values.
Why the same hazard does different damage
A flood is a hazard. Whether it becomes a disaster depends on who is standing in the way and what they have to protect themselves with. The Netherlands and Bangladesh both face serious flood risk. One has spent decades building engineered flood defences; the other has far fewer resources to work with, and a much larger population living on low-lying deltas. Same physical process, very different consequences.
The sentence that earns marks: vulnerability = exposure to the hazard plus the capacity to cope with it. Write about both halves and you are answering the question properly.
The four areas of impact
Use this as a checklist in the exam. If a question asks for impacts on society, you always have four headings to reach for.
Health
Heatwaves are becoming more frequent and more intense, and they are most dangerous for the very young, the elderly and people who work outdoors. The Pacific Northwest heatwave of June 2021 killed hundreds of people across western Canada and the northern United States, overwhelmed hospitals and caused power cuts as air conditioning demand spiked.
Disease spreads as warming widens the range of insects that carry it, pushing malaria and dengue into areas that were previously too cool for the mosquitoes.
Air quality falls in several ways at once: higher temperatures speed up the formation of ground-level ozone, wildfires release smoke and particulates, and stagnant air conditions stop pollutants dispersing.
Water supply
Drought lasts longer and bites deeper. Cape Town’s “Day Zero” crisis in 2018 came within weeks of a major city switching off its taps.
Melting glaciers remove a natural water store. Rivers fed by the Andean glaciers supply millions of people, and once the ice is gone the dry-season flow goes with it.
Flooding contaminates supplies, mixing sewage, chemicals and pollutants into the water people drink.
Warmer water plus nutrient run-off encourages harmful algal blooms, whose toxins have repeatedly made water from Lake Erie unsafe to drink.
Agriculture
Crop yields fall where heat stress and unreliable rainfall hit growing seasons — reduced wheat harvests in Australia and India are the standard example.
Pests survive milder winters and spread into new regions, raising crop losses and pesticide use.
Livestock suffer heat stress, which lowers productivity: dairy cows give less milk in prolonged heat.
Food security weakens overall — supply becomes less reliable and prices rise, which hurts low-income households first.
Infrastructure
Extreme weather damages what was built for a gentler climate: more frequent storms, floods and hurricanes.
Transport networks buckle — rails distort in heat, roads and bridges wash out in floods.
Buildings cost more to cool, more to repair after storms, and coastal erosion undermines seafront property outright.
Energy supply is hit twice: demand rises for cooling while extreme weather knocks out the grid that delivers it.
Notice the pattern in that list. Almost every impact costs money to fix — which is exactly why wealth turns out to be one of the strongest predictors of how badly a society suffers.
Resilience: why outcomes differ
Resilience is a society’s ability to withstand a shock, adapt to it and recover afterwards. Three things decide it.
Factor
What it means
How it plays out
Economic stability
Money available to rebuild, insure and prepare
Rebuilding after a hurricane strains any local economy, but a wealthy region recovers in months while a poorer one may not recover at all
Social equity
How evenly risk and resources are shared within a society
Low-income and marginalised communities usually live in the most exposed places and have the fewest options for leaving or rebuilding
Adaptive capacity
The technology, planning, institutions and knowledge to change how things are done
The Netherlands has invested heavily in engineered flood defences; Bangladesh faces comparable flood risk with far fewer resources
The top-left corner is where climate justice arguments come from: the societies with the least capacity have usually emitted the least.
Perspectives on climate change
How people respond depends on how they see the problem, and that is shaped by experience, politics and culture.
Individual — people who see change directly take it more seriously. A farmer noticing that the planting season has shifted has evidence in front of them that a city office worker does not. Individuals can also act: using public transport, cutting energy use, changing diet. Personal health worries feed in too, such as parents in polluted cities worrying about their children’s asthma.
Societal — government policy sets the framework, such as the UK’s commitment to reach net-zero carbon emissions by 2050. Local communities act at smaller scales, with projects like urban community gardens that improve food security and cool neighbourhoods at the same time.
Cultural — values and traditions shape both perception and response. Many indigenous communities hold detailed ecological knowledge built up over generations, and use it to adjust farming, fishing and herding as conditions change.
Environmental value systems are the backbone of ESS. When a question asks about perspectives, do not just list opinions — explain why a group holds theirs, based on what they experience and what they stand to lose.
Keep it balanced. Climate change also brings gains for some regions: longer growing seasons and new farmland further north in Canada and Russia. Acknowledging that, then explaining why it does not offset the global losses, is exactly what an “evaluate” command term is asking for.
Worked examples
WORKED EXAMPLE
Two coastal countries face similar increases in flood risk, but one suffers far greater loss of life. Explain how socio-economic conditions could account for this. [4]
Step 1: separate hazard from vulnerability
The physical hazard is the same. The difference lies in exposure and in the capacity to cope.
Step 2: economic stability
A wealthier country can fund sea walls, drainage and insurance, and rebuild quickly afterwards.
Step 3: adaptive capacity
It is also likely to have early warning systems, evacuation planning and building regulations, so fewer people are caught by the flood at all.
Step 4: social equityWhere income is low and unequal, more people live on the most exposed land, in weaker housing, with fewer ways to leave — so the same water kills more people.Same hazard, different exposure and different capacity
WORKED EXAMPLE
Outline how a single drought can affect health, agriculture and infrastructure in the same region. [3]
Agriculture first
Reduced water availability lowers crop yields and stresses livestock, so food supply falls and prices rise.
Then health
Less food and less clean water mean malnutrition and waterborne illness, while heat and dust worsen respiratory conditions.
Then infrastructureWater treatment and supply systems come under strain, hydroelectric output falls, and demand for cooling rises just as the energy supply is squeezed.One hazard, three linked systemsTracing an impact across systems is what lifts an answer into the top band.
💡 Exam tip
Use the four headings — health, water, agriculture, infrastructure — to structure any “impacts on society” answer.
Name real examples: the 2021 Pacific Northwest heatwave, Cape Town’s Day Zero, Andean glacier loss, Lake Erie algal blooms.
Always link impact to socio-economic conditions. “Poorer communities are affected more, because…” is a mark-scoring sentence.
Distinguish exposure from capacity to adapt. They are separate ideas and questions often want both.
Give a balanced view where the command term asks for one — including the regions that gain.
⚠ Common mix-up
Impacts are not evenly shared. Writing “climate change affects everyone equally” throws away the whole socio-economic dimension.
Resilience is not the same as wealth. Money helps, but social cohesion, planning and knowledge matter too — some low-income communities cope remarkably well.
Adaptation is not mitigation. Adapting means living with the change; mitigating means reducing the emissions that cause it.
A single event is not proof. Link extreme events to climate change through changing frequency and intensity, not by blaming one storm.
Perspectives are not just opinions. Explain what shapes them — experience, values, policy and what each group has at stake.
Up next: Global Agreements and Decarbonisation — why climate change needs treaties rather than national action, and what it takes to get an economy off fossil fuels.
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