Climate Justice and the Human Cost of Climate Change

Celine Chemali writes about climate justice, offers examples of its impact on vulnerable people, and demonstrates why it’s important to address climate change and inequity.

What is climate justice?

When discussing climate justice, it is helpful to begin by understanding the meaning of the two words that make up the term.

First, climate. Unlike weather, which describes short-term atmospheric conditions and often determines what we wear or whether we go to the beach, climate refers to long-term patterns of weather, typically observed over a period of about 30 years. This distinction by the NOAA provides essential context for understanding the concept of climate change and its consequences. 

Second, justice. The Cambridge dictionary defines justice as “fairness in the way people are dealt with”. It involves things like ensuring that rights are respected, responsibilities are shared appropriately, and opportunities and resources are distributed equitably. This brings us to an important question: Is climate change just and fair?

To explore this question, let’s look at how climate change affects people in different ways. Some groups, like women and people with disabilities, are more vulnerable to climate change because of structural inequalities built into society. Lower-income communities feel the impact more sharply because socioeconomic inequalities mean they have fewer resources to recover from storms, floods, or droughts. And the youngest among us will face the greatest burden, an example of intergenerational inequity, as today’s choices are creating a tougher world for our children to live in.

“Those who have done the least to cause climate change are often the ones who lose the most.”

Examples of climate justice: the impact on women

Gender inequality is one of the clearest ways structural inequalities show up in climate change. Imagine a small community where droughts are becoming more frequent, and access to clean water is no longer guaranteed. Every day, women spend hours collecting water for their families, a task that grows harder as streams dry up and wells run low. Without reliable access to safe water and sanitation, women face higher risks during menstruation, pregnancy, and childbirth, as the WHO points out. Basic hygiene can become a daily challenge, and what should be a normal part of life can turn into a source of stress and danger.

Climate change can also make life more dangerous for women in ways that aren’t always obvious at first. When floods, storms, or other disasters force families to leave their homes, women and girls often end up in crowded shelters or unstable living situations. Without enough privacy or security, the risk of sexual assault and harassment rises. UN Women explains that environmental stress can increase violence against women in general, and disasters just make it worse. Even everyday things, like heatwaves, have been linked to spikes in intimate partner violence. Experts warn that if climate change continues unchecked, it could be linked to one in every ten cases of such violence by the end of the century.

The impact of climate change on people with disabilities

Just as climate disasters make life harder and more dangerous for women, they also magnify the challenges faced by people living with disabilities. Imagine a neighbourhood hit by a sudden flood or a blistering heatwave. Evacuation plans are announced, but shelters are crowded and aren’t designed with ramps or accessible facilities. Streets are blocked, information is shared only in formats that aren’t easy for everyone to follow, and support networks are disrupted. For someone using a wheelchair, navigating these obstacles can feel nearly impossible. For someone with a sensory or cognitive disability, understanding emergency instructions or finding help in a chaotic situation can be overwhelming or even life‑threatening.

Research from the Harvard University Center for the Environment shows that people with disabilities are two to four times more likely to be injured or die in climate‑related disasters than others, not because of their disability itself, but because emergency systems and disaster responses too often overlook their needs. Beyond the immediate danger, climate change can also interrupt access to essential health care, medications, or assistive devices, turning every extreme weather event into an even bigger setback.

How poverty increases vulnerability

While structural inequalities show us who is most vulnerable, economic inequality often determines how badly people are hit. In many low-income countries, a heavy storm or flood can quickly turn life upside down. Homes made of non-robust materials and construction methods are easily damaged or washed away. Roads crumble, bridges collapse, and water systems fail. Families often don’t have the money to rebuild or reinforce their homes, so every disaster hits harder than the last. Weak infrastructure and limited resources turn what might be a temporary setback in wealthier communities into a long-term crisis. So, the vicious cycle continues. 

Today, the difference in economic output between the world’s wealthiest nations and its poorest is about 25 percent larger than it would have been without global warming. A study from Stanford University shows that rising temperatures have steadily increased economic inequality across the globe. Between 1961 and 2010, global warming reduced wealth per person in many of the world’s poorest countries by 17 to 30 percent. For countries where agriculture is a main source of income, the effects have been especially severe. When droughts last longer, rains arrive at the wrong time, or heatwaves damage crops, farmers lose their livelihoods. These losses ripple through entire economies, affecting food prices, employment, and national income.

Meanwhile, the people driving the crisis bear far less of the cost. According to an Oxfam report, globally, the 10% of households with the highest per capita emissions contribute 34-49% of global household greenhouse gas emissions, while the bottom 50% contribute only around 10%. In other words, those who have done the least to cause climate change are often the ones who lose the most.

This imbalance shows how unjust climate change is: it’s not only an environmental crisis, but also a social and economic one, magnifying inequalities that already exist and leaving the most vulnerable to face the heaviest losses. While socioeconomic inequalities show how climate change affects people differently across countries and income levels today, another form of injustice unfolds more quietly, across generations. Intergenerational inequity invites us to look beyond the present moment and reflect on who will live with the long-term consequences of the choices being made now.

“Climate change is driven by collective choices, and that means it can also be addressed through collective action.”

A problem for future generations

Children and future generations are inheriting a world shaped by decisions they had no role in making. The greenhouse gas emissions released today will remain in the atmosphere for decades, locking in rising temperatures, stronger storms, and more frequent heatwaves. Young people will grow up facing climate risks that their parents and grandparents did not, from food and water insecurity to displacement and health threats. At the same time, they will have fewer resources to respond, as ecosystems degrade and public budgets are increasingly spent on repairing damage rather than investing in education, healthcare, or opportunity. This imbalance raises a fundamental question of fairness: Is it just for future generations to pay such a high price for a crisis they did not create?

International research led by Professor Wim Thiery from the Vrije Universiteit Brussel research group BCLIMATE shows that children will experience a far greater lifetime exposure to extreme climate events, especially in low-income countries. Under current climate policies, a child born today is expected to face seven times more extreme heatwaves over their lifetime than their grandparents did. Their lives will also include 2.6 times more droughts, 2.8 times more river floods, nearly three times as many crop failures, and twice as many wildfires compared to people born 60 years ago. These findings highlight a striking imbalance. What happens next will determine whether future generations inherit a world defined by loss or one shaped by responsibility and care.

Climate change is a human rights offender

Climate change is not only an environmental or economic crisis, it is also a direct threat to fundamental human rights. As Mary Robinson says in her book ‘Climate Justice: Hope, Resilience, and the Fight for a Sustainable Future’, “‘All human beings are born free and equal in dignity and rights.’ Yet, when it comes to the effects of climate change, there has been nothing but chronic injustice and the corrosion of human rights.”

Climate change undermines the right to life as extreme heat, floods, storms, and wildfires become more frequent and deadly. It violates the right to health by worsening air quality, spreading disease, and exposing millions to heat stress and malnutrition. The rights to food and water are challenged as droughts, crop failures, and shrinking freshwater resources make it harder for communities to meet their most basic needs. The right to shelter is also at risk, as rising seas and extreme weather destroy homes and force families to flee. If climate change were a politician, a corporation, or any person in a position of power causing this level of harm, displacement, hunger, forced migration, and loss of life, it would likely face prosecution and international condemnation. 

But unlike a single individual, climate change is driven by collective choices, and that means it can also be addressed through collective action. Recognizing climate change as a human rights issue shifts the conversation from distant targets and technical solutions to people, dignity, and responsibility. It reminds us that protecting the climate is not just about saving ecosystems (not that it’s not a good enough reason on its own), but about safeguarding lives: today and for generations to come. The path forward is still open, and the decisions we make now can shape a more just, resilient, and hopeful future.