Climate Change Responses, Technologies and Lifestyles

Tackling the causes of climate change

Burning fossil fuels for electricity, heating, transport and industry releases carbon dioxide. Reducing these emissions can limit future climate change. This is mitigation: tackling the causes rather than simply dealing with the consequences.

Adaptation is different. Building homes on stilts in flood-prone areas or planting drought-resistant crops helps people cope with changing conditions, but does not necessarily reduce emissions. Both responses matter: mitigation limits future change, while adaptation reduces vulnerability to its effects.

Mitigation involves three connected approaches: using less energy, replacing fossil fuels with lower-carbon energy sources, and preventing carbon dioxide from entering the atmosphere or increasing its removal. Individuals can make choices, but governments influence which choices are affordable and practical.

Changing everyday energy use and lifestyles

Some lifestyle changes reduce the demand for energy. Walking or cycling instead of driving avoids fuel use for that journey. Public transport can reduce emissions per passenger when it carries many people who would otherwise travel in separate cars. Turning down the thermostat and switching off unused electrical equipment also reduce energy demand.

Other changes improve energy efficiency, meaning that less energy is needed to provide the same service. Loft and wall insulation reduce heat loss from a home. Double or triple glazing does the same through windows. The home therefore needs less energy to stay warm; where heating depends on fossil fuels, this reduces emissions. Energy-efficient appliances similarly use less electricity to carry out their task.

Individuals can also adopt new technology. Solar panels generate electricity without burning fuel during operation. Heat pumps provide an alternative to gas or oil boilers. However, buying and installing equipment costs money, so the ability to act is unequal. A household may support climate action but be unable to afford improvements.

Transport choices also depend on circumstances. Cycling may be practical for a short urban journey, whereas someone living far from work with an infrequent bus service may depend on a car. This is why individual responsibility cannot be separated from government investment in transport and housing.

Replacing fossil fuels and capturing carbon

Wind turbines and solar panels generate electricity without directly releasing carbon dioxide during operation. Replacing fossil-fuel electricity with these sources can therefore reduce emissions. They are not completely impact-free: manufacturing, transporting and installing equipment can produce greenhouse gases, and wind and solar output depend on weather conditions.

Nuclear power also produces electricity without directly emitting carbon dioxide during generation. Supporters value its large electricity output, while opponents are concerned about radioactive waste, possible leaks and high costs. Low-carbon energy choices therefore involve more than comparing emissions alone.

Carbon capture and storage tackles emissions at sources such as power stations and industrial facilities. Carbon dioxide is captured, compressed, transported and injected into suitable underground rock formations for storage. This can reduce the amount reaching the atmosphere, but the technology is expensive. Energy companies may resist paying for it or pass costs on to customers.

Afforestation increases carbon removal. Growing trees absorb carbon dioxide through photosynthesis and store carbon in their tissues. Governments, companies and individuals may fund tree planting to offset emissions. However, offsetting should not become an excuse to avoid reducing emissions at their source: paying for trees does not stop the original activity from releasing greenhouse gases.

Why values and attitudes differ

People may agree that emissions should fall but disagree about how quickly change should happen, which technologies should be used and who should pay. These attitudes reflect different priorities: environmental protection, affordable energy, jobs, food production and the character of local places.

For example, Friends of the Earth and Greenpeace support greater use of renewable energy. Residents near a proposed wind farm may nevertheless object to turbine noise or effects on birds. Solar farms may raise concerns about using agricultural land. Someone can therefore support renewable energy nationally while opposing a particular development locally.

Biofuels show another trade-off. Growing crops for fuel can provide income for farmers and an alternative to fossil fuels. However, using land for fuel crops rather than food can put pressure on food supplies and prices. Benefits to one group may create costs for another.

Affordability also shapes attitudes. Insulation may reduce heating bills over time, but its initial cost can prevent adoption. Policies that shift costs onto households may face opposition even from people who accept the need for mitigation.

A balanced judgement should ask how much a strategy reduces emissions, whether people can afford it and what other effects it creates. A combination of measures is usually more convincing than relying on one technology: energy efficiency reduces demand, lower-carbon generation changes the supply, and public transport makes lower-emission lifestyles easier.

Local action: Bristol’s climate strategy

Local authorities can influence streets, transport, buildings and energy schemes. Bristol’s One City Climate Strategy includes plans to connect 65,000 buildings to district heat networks, which distribute heat and hot water from a shared system. The emissions benefit depends on how that heat is produced.

Other measures include pedestrianisation, improved pavements and cycle paths, and public transport improvements such as metro-bus services. School streets restrict non-essential vehicles around schools. These measures can make walking, cycling and public transport more attractive, reducing dependence on private cars.

Bristol also aims to increase renewable energy use. Its Solar Together scheme helps reduce the cost of solar installations through collective purchasing. This connects government action with individual adoption: households are more likely to install technology when it becomes affordable.

Local action can respond closely to local needs, but councils cannot solve a global problem alone. Their success also depends on funding, public participation and national energy and transport policies.

National action: UK targets and investment

National governments can set laws, fund infrastructure and support new technologies at a scale beyond individual households or councils.

The UK’s Climate Change Act, passed in 2008, established a framework for reducing greenhouse gas emissions through carbon budgets. Its original target was an emissions reduction of at least 80% below 1990 levels by 2050; this was later strengthened to net zero by 2050. Net zero does not mean that every activity produces no emissions: remaining emissions must be balanced by removals.

The Net Zero Strategy of 2021 set out planned measures including investment in heat pumps, vehicle electrification, carbon capture, green technology research and woodland creation. Encouraging walking, cycling and public transport also links national policy to changes in everyday lifestyles.

Targets give a long-term direction, while budgets and investment help turn that direction into action. Nevertheless, announcing a target does not guarantee its achievement. Effectiveness depends on implementation, funding and whether households and businesses adopt the changes.

International action: cooperation across borders

Greenhouse gases affect the global atmosphere, wherever they are emitted. One country’s actions benefit others, while continued emissions elsewhere can undermine progress. International cooperation is therefore essential.

The Rio Earth Summit in 1992 helped establish international efforts to stabilise greenhouse gas concentrations. The Kyoto Protocol, agreed in 1997, set emissions-reduction commitments for industrialised countries, using 1990 as a baseline. Developing countries did not face the same binding reduction commitments, reflecting concerns that restrictions could hinder development and poverty reduction. Limited participation weakened its reach; Canada withdrew in 2011.

The Paris Agreement, adopted in 2015, broadened international participation. Its central aim is to keep warming well below 2°C above pre-industrial levels and pursue efforts to limit it to 1.5°C. Countries meet at United Nations climate conferences, known as COPs, to negotiate and review action.

Cooperation is difficult because countries have different resources and priorities. Wealthier countries can more readily finance new technologies, while poorer countries may prioritise access to energy and economic development. Fairness involves deciding how to share the costs of reducing emissions and supporting countries with fewer resources.

International agreements provide shared goals, but those goals depend on national policies, local delivery and individual choices. The strongest response connects all these scales rather than treating any one of them as sufficient.

Mitigation or adaptation?

• Mitigation: tackles causes by reducing emissions or increasing carbon removal.
• Adaptation: reduces vulnerability to climate impacts, such as using drought-resistant crops.

Individuals and technology

• Walk, cycle or use public transport; reduce unnecessary electricity and heating use.
• Insulation, glazing and efficient appliances reduce energy demand.
• Solar panels and heat pumps can reduce reliance on fossil fuels.
• Wind, solar and nuclear provide lower-carbon electricity; carbon capture prevents some emissions reaching the atmosphere.
• Afforestation absorbs carbon dioxide. Offsetting should not replace emissions cuts.