Heatwaves, droughts, floods, wildfires and extreme weather events are already altering environmental, economic and social balances in many parts of the world. According to the United Nations, climate change is mainly caused by human activities and the burning of fossil fuels such as oil, coal and gas. Its impacts are expected to intensify unless greenhouse gas emissions are rapidly reduced.
Europe is particularly exposed. According to the European Environment Agency, the continent is warming faster than the global average and is facing increasing risks linked to extreme heat, drought, wildfires and flooding.
In the face of a challenge of this scale, the question is no longer only what governments and major companies should do. It is also a question for each of us: what can we change, concretely, in our daily lives?
It all starts with me
Tackling climate change requires profound transformations in energy systems, transport, industry, agriculture and the way we produce and consume. Individual choices cannot replace public policies or action by businesses. They can, however, help create demand for more sustainable products and services, change collective behaviours and increase pressure on institutions and companies to accelerate the transition.
The United Nations highlights precisely this connection between individual action and systemic change: people can contribute by changing their consumption habits while also asking governments and businesses to take action.
“It all starts with me” does not mean that responsibility for the climate crisis falls exclusively on individuals. It means recognising that every person can become part of the solution.
Energy: use less and choose better
Energy is one of the central areas of the climate crisis. Energy production and consumption account for a significant share of global greenhouse gas emissions, while dependence on fossil fuels continues to contribute to global warming.
At an individual level, reducing energy waste is one of the first steps we can take.
Turning off lights when they are not needed, avoiding leaving televisions and computers switched on unnecessarily, using energy-efficient appliances, improving home insulation and managing heating and air conditioning carefully are simple measures which, as part of a broader strategy to reduce consumption, can help lower energy demand.
Whenever possible, choosing renewable energy sources is also an important part of the transition. Solar and wind power can reduce dependence on fossil fuels and are considered by the United Nations to be essential elements in transforming the energy system.
Travel and transport: moving more sustainably
Cars, trucks, aircraft and ships still depend heavily on fossil fuels. According to the United Nations, the transport sector accounts for approximately 15% of global greenhouse gas emissions.
Here too, everyday choices can contribute to change.
For short journeys, walking or cycling avoids emissions while also bringing health benefits. For longer journeys within cities, public transport can provide an alternative to using a private car.
When a car is necessary, sharing a journey with other people can reduce the number of vehicles on the road. For travel between cities, trains can be an alternative worth considering, particularly where efficient connections are available.
The way we choose to travel during holidays is also part of our environmental decisions. Reducing unnecessary flights, choosing destinations that can be reached by rail and paying greater attention to regional and local travel are some of the possibilities.
The food we choose has an impact on the planet
One of the less visible dimensions of the climate crisis concerns what we put on our plates every day.
According to the United Nations, the food system is responsible for approximately one third of global greenhouse gas emissions. These emissions come from the entire chain: agricultural production, livestock farming, land use, processing, transport, distribution, consumption and food-waste management.
This does not mean that everyone has to adopt the same diet. It means understanding that our eating habits have environmental consequences.
A greater proportion of plant-based foods in the diet can reduce environmental impact compared with dietary patterns characterised by high consumption of animal products. Buying local products when possible, supporting local producers and choosing seasonal foods can also be part of a more sustainable approach.
Food waste: what we throw away is also wasted energy
Reducing food waste is one of the most practical actions a household can take.
When food is thrown away, it is not only the food itself that is wasted. Water, land, energy, fertilisers, labour, transport and packaging have already been used to produce it and bring it to the consumer.
According to the United Nations, more than one billion tonnes of food are wasted worldwide every year, while the production, transportation and decomposition of wasted food contribute significantly to global emissions.
Planning shopping, buying only quantities that can realistically be consumed, storing food correctly, using leftovers and choosing products with a shelf life that matches our consumption habits are simple measures that can simultaneously reduce waste, costs and emissions.
Buy less and use things for longer
A model based on continuously consuming new products puts considerable pressure on natural resources.
Clothing, electronic devices, furniture, packaging and many other goods require raw materials, energy, water and transportation. According to the United Nations, the extraction and processing of materials, fuels and food contribute to approximately half of global greenhouse gas emissions and more than 90% of biodiversity loss and water stress.
Before buying something, one question can become part of our habits: do I really need this?
Repairing something instead of replacing it, buying durable products, reusing items, choosing second-hand goods when appropriate and reducing unnecessary purchases can all help decrease pressure on natural resources.
Sustainability does not necessarily mean giving everything up. It means learning to distinguish between what we actually need and what we buy simply because it is available.
Plastic and the culture of single-use products
Plastic has transformed modern society, but excessive use and inadequate waste management are among the major environmental challenges of our time.
Reducing single-use products, using reusable bottles and containers, avoiding unnecessary packaging and disposing of waste correctly are behaviours that many people can adopt.
Here too, the objective is not perfection. It is to progressively reduce what is unnecessary.
Water: a resource we cannot consider infinite
Climate change is increasing pressure on water resources in many regions. The European Environment Agency identifies drought and increasing water scarcity among the climate risks affecting Europe.
Saving water therefore means more than simply reducing a household bill. It means protecting an essential resource.
Turning off the tap while brushing our teeth, repairing leaks quickly, using washing machines and dishwashers when they are sufficiently full, and paying attention to the irrigation of gardens and plants are simple measures that can become part of a more responsible approach to water.
Protecting nature means protecting ourselves
Forests, wetlands, rivers, seas, soils and biodiversity perform essential functions for life on Earth.
Ecosystems absorb carbon, regulate the water cycle, protect soils and provide habitats for countless species. Their conservation is therefore closely connected to the fight against climate change.
Planting native species, avoiding damage to natural habitats, respecting protected areas, reducing the use of pollutants and participating in local environmental initiatives are some of the ways in which communities can contribute.
Greener cities and more resilient communities
The response to climate change is not only about reducing emissions. We must also prepare for impacts that can no longer be avoided.
Adaptation means making cities, infrastructure, homes, agricultural systems and communities more resilient to the consequences of climate change.
According to the European Environment Agency, expanding urban green spaces, restoring natural areas capable of absorbing excess water and developing infrastructure that is more resistant to extreme events can help protect people and the environment.
A tree in a city, a park, a green roof, a permeable surface or a restored wetland can become part of a broader strategy for dealing with heat and heavy rainfall.
From individual choices to collective action
Individual action is important, but it should not become an excuse for ignoring the responsibility of institutions and the economic system.
One person can reduce the energy consumption of their home, but more energy-efficient buildings are also needed. A citizen can choose public transport, but efficient and accessible networks are required. A family can reduce food waste, but more sustainable food systems are necessary. A consumer can choose more responsible products, but companies must also change their production processes and supply chains.
Tackling climate change therefore requires shared responsibility.
The United Nations emphasises that reducing emissions and achieving climate neutrality requires a profound transformation of the way we produce, consume and travel. At the same time, individual actions can help create demand for more sustainable solutions and strengthen public support for climate policies.
Education for change
One of the most important actions can begin long before a purchasing decision: with education.
Understanding where the energy we use comes from, knowing where the food we eat comes from, recognising the impact of our travel and learning to distinguish between necessary and unnecessary consumption allows us to make more responsible decisions.
Environmental education concerns children, young people and adults alike. Sustainability should not be only a school subject or the theme of an occasional campaign, but a skill that accompanies us throughout everyday life.
We do not have to be perfect
One of the risks of communicating about the climate crisis is turning sustainability into a pursuit of individual perfection.
We do not have to change everything in a single day.
We can start with one habit: using the car less, reducing food waste, consuming less energy, cutting down on single-use products, using public transport more often, choosing more plant-based foods or repairing an object instead of replacing it.
One action may seem insignificant. Millions of people gradually changing their habits, however, can represent a significant transformation.
The future depends on the decisions we make today
Climate change is a global challenge and requires global responses. But every collective transformation is also made up of millions of decisions taken every day.
Turning off a light, choosing the train, avoiding waste, repairing an object, planting a native species, using less water and shopping more responsibly: none of these actions can stop climate change on its own.
Together, however, they can contribute to creating a new culture.
“It all starts with me” should not be understood as the promise that one individual can save the planet alone. It is, rather, a starting point: taking responsibility for our part, changing what we can change and using our everyday choices to call for a broader transformation.
The planet does not need perfect citizens. It needs informed citizens, active communities, responsible businesses and institutions capable of taking action.
The climate challenge is enormous, but solutions exist. The United Nations emphasises that the transition towards a more sustainable world is possible and can also bring benefits in terms of health, air quality, employment and prosperity.
Saving the planet is not a single gesture. It is an everyday choice.
And for each of us, it can begin with a very simple question:
What can I do today, concretely, to leave future generations a healthier planet than the one I inherited?
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