Global Warming – the consequences for everyone:

I wrote an article yesterday on global inequality and its consequences for world poverty. I listed global warming as one of the causes and it occurred to me that the subject more than merits an article on its own. Looking at the consequences of recent severe weather patterns on Ireland and elsewhere, it seems to me that it is time we all woke up and did something about it before it’s too late.

Unfortunately global warming is no longer a distant scientific theory or a political talking point; it is a lived reality which ultimately affects all of us who live on planet earth. Around the world, temperatures are rising, weather patterns are shifting, and ecosystems are under pressure in ways that affect every person on the planet. Scientific bodies such as the Intergovernmental Panel on Climate Change and space agencies like NASA have spent decades gathering evidence, and their conclusions are unequivocal: the Earth is warming at an unprecedented rate due largely to human activity. The consequences are vast, interconnected, and increasingly unavoidable.

The effect of five years with no rainfall.

I know you’ve heard this before. Sorry if it sounds boring but the more people say it and the more often they say it is the only way it will get through to people; get into their minds and eventually encourage them to do something about it. Some years back, I felt we were making progress; people seemed to be energized about burning less fossil fuels and reducing waste. Sadly, we have slipped back, not least because some of our political leaders have not taken the thing seriously and others deny that it is happening at all.

But let us look at the facts – proven scientific facts. Since the late 19th century, average global temperatures have risen significantly. What is termed as the ‘Industrial Revolution,’ started around the end of the 18th Century and has arguably continued ever since. Industry relies primarily on the burning of fossil fuels such as coal, oil, and gas. The issue was further exacerbated by the invention of the internal combustion engine. While this invention has changed the world and given all of us freedom to move about beyond the wildest dreams of our forebears, it has become the primary problem in terms of carbon emissions. Let’s be honest here. Forget the nonsense about air travel and sea travel and trains; the problem is the car and the truck and of course industrial emissions like coal burning facilities. But the main problem is the domestic car and truck, which is you and me and everyone else. This is arguably why it is so difficult to resolve. If you don’t believe me, just look out your window in every city, town, village and road in every country – what do you see – fossil burning vehicles. If you really want to be frightened, go to a big city in the USA or India or China.

The problem is that the fuels we burn every day release greenhouse gases—especially carbon dioxide and methane—that trap heat in the atmosphere. This phenomenon, known as the greenhouse effect, is natural and necessary for life, but human activity has intensified it way beyond the planet’s natural balance.

The result is not simply ‘warmer weather.’ If it were, it might be soluble. But global warming disrupts the complex systems that regulate climate, ocean currents, rainfall, and biodiversity. Every region experiences these disruptions differently, yet no region escapes them. In the west, we can insulate ourselves to some extent but the poorest regions of the world have no such option and are suffering exponentially because of the sins of the richest regions.

Melting ice is leading to rising ocean levels and the degradation of habitats.

One of the most visible consequences of global warming is sea-level rise. As temperatures increase, glaciers and ice sheets melt and oceans expand. Coastal cities and low-lying nations are particularly vulnerable. Countries such as the Maldives face existential threats, with entire communities at risk of displacement within decades.

Major urban centers are already experiencing more frequent flooding. Storm surges ride on higher sea levels, turning once-in-a-century floods into regular events. Coastal infrastructure, tourism, and housing markets are increasingly exposed to damage and rising insurance costs. Sea-level rise is not just an environmental issue; it is a humanitarian one. Millions of people could become climate refugees, forced to leave homes and livelihoods behind.

Heatwaves, wildfires, floods, and storms are becoming more intense and more frequent. Warmer air holds more moisture, increasing the likelihood of heavy rainfall and flooding. At the same time, higher temperatures dry out soils and vegetation, often rendering lands useless and fueling devastating wildfires. We have seen record-breaking heatwaves in recent years across Europe, North America, and Asia. These extreme temperatures are not only uncomfortable; they are deadly. Heat stress kills thousands annually, particularly among older populations and those without access to cooling.

Agriculture is also suffering. Crops are sensitive to temperature, rainfall patterns, and seasonal cycles. When these systems shift unpredictably, harvests fail. Food prices rise. Hunger spreads. What begins as a climate issue can quickly become an economic and social crisis, particularly in poorer disadvantaged areas.

Global warming also disrupts the water cycle. Some regions experience prolonged droughts, while others face destructive flooding. We have just had fifty days of continuous rain in Ireland while parts of Africa haven’t had rain in five years. Glaciers, which supply water to billions of people, are shrinking. Rivers that once flowed year-round now run dry during critical seasons.

The main culprit 1.

Farmers face a double challenge: less predictable rainfall and increasing pest outbreaks, which thrive in warmer climates. Staple crops such as wheat, rice, and maize are already showing reduced yields in certain regions. Food insecurity does not stay local. In a globalized economy, crop failures in one region can drive price spikes worldwide. This ripple effect makes food less affordable, particularly in vulnerable communities.

Climate change is often framed as an environmental issue, but its economic impact is profound. Infrastructure damage from storms and floods costs billions annually. Insurance premiums rise, and in many high-risk areas, insurance becomes unavailable. Businesses face supply chain disruptions as extreme weather affects transport and production. Tourism has declined in some regions affected by heatwaves, wildfires, or coral reef loss. Meanwhile, governments must invest heavily in adaptation measures such as flood defences and emergency response systems.

The main culprit 2.

The World Bank estimates that climate change could push millions more people into poverty by the middle of this century. Economic inequality is likely to widen, as poorer nations and communities lack the resources to adapt. Global warming affects human health in multiple ways. Heat-related illnesses and deaths are increasing, but the effects go far beyond temperature. Warmer climates expand the range of disease-carrying insects such as mosquitoes, spreading illnesses like malaria and dengue fever to new regions. Air quality worsens as higher temperatures increase smog formation and wildfire smoke. Mental health is also affected. Communities facing repeated disasters experience anxiety, trauma, and loss. Climate change is not just reshaping landscapes; it is reshaping lives.

Nature is highly sensitive to temperature changes. Coral reefs, for example, are bleaching as oceans warm and become more acidic. Forests face increased risk from pests, drought, and wildfire. Species that cannot adapt or migrate quickly enough face extinction. Biodiversity loss has cascading effects. Ecosystems provide essential services—pollination, water purification, soil fertility—that support human life. As ecosystems weaken, the stability of food systems and economies is threatened.

As resources become scarcer and populations are displaced, social tensions can rise. Competition for water, land, and food has the potential to intensify existing conflicts. Migration pressures may strain political systems and international cooperation. Climate change can amplify existing inequalities and vulnerabilities. Those who contribute least to global emissions often suffer the most severe consequences.

I’m sorry if it all sounds depressing but unfortunately it is all true. The scientific research is there to prove it. So, what can we do? We are not without hope; China, although a massive consumer of fossil fuels and producer of carbon is the world’s largest producer of wind energy and is building masses of electric cars. Other countries are following suit. There is a growing awareness of the trouble we are in and many people have greatly reduced their carbon footprint and tried to eliminate waste. Sadly, by contrast, the US is heading in the opposite direction and leading the world in producing more fossil fuels and more harmful gasses. Arguably this is a factor of the current incumbent of the white house but not entirely. I travel regularly to the USA and apart from their total dependence on vehicular transport, they produce unbelievable amounts of waste, mostly plastic which of course is carbon based. I recently wrote an article on Africa where I said that the plastic bag seems to be almost seen as the emblem of freedom, such is the proliferation of it. You can add the US to this only more so. As far as I can see, almost everything is one-use disposable and there is almost zero recycling. In fact I saw more recycling in Africa. Europe is well developed in this area and more and more countries are trying to follow suit.

Addressing global warming requires collective action. Agreements such as the United Nations climate frameworks bring nations together to reduce emissions and share responsibility. Transitioning to renewable energy, improving energy efficiency, protecting forests, and developing sustainable agriculture are essential steps. Technology and innovation offer hope, but political will and public engagement are equally critical. To this end, the domination of the Climate COP conferences by oil and gas producing nations is worrying and seems often to apply a brake on change due to vested interests.

People need to wake up. If we keep building bigger cars and ignore the consequences; if we keep using fossil fuels to create energy; if we keep using disposable items when we could re-use; if we ignore the lessons of history and indeed the current climate disasters, then we may not pay the ultimate price, but our children and grandchildren will. They won’t thank us for it.

The consequences of global warming are not confined to distant places or future generations. They are unfolding now, changing economies, societies, and ecosystems worldwide. The story is not solely one of crisis. It is also a story of choice. We have the knowledge and the tools to reduce emissions, adapt to changing conditions, reduce waste and build more sustainable systems. The transition to cleaner energy and more resilient infrastructure can also create jobs, improve health, and protect the natural world. Global warming is, ultimately, a shared challenge. Its consequences touch everyone—rich and poor, urban and rural, present and future. The decisions made today will determine the scale of the impacts tomorrow. The question is no longer whether climate change will affect us; it already does. Let’s all cooperate and do something about it.