Understanding population patterns can help us tackle climate change
14 SEP 2023
Climate change and demography share deep ties but their relationship is more complex than it might seem. Population growth is just one side of a story that, when we dig a little deeper, reveals some cause for optimism in the face of adversity.
There are three times more people on Earth today than there were in the 1950s. With a population of eight billion that looks set to continue growing into the middle of this century, we often think about the negative environmental impact of population growth when we consider the relationship between demography and climate change. Whilst the impact of this rapid expansion has been undeniable, it’s not the only side to the story.
The connection between population patterns and climate change is a complex matrix that includes not only population growth, but also food systems, urbanization and displacement. Negativity dominates the headlines, but there are more than a few causes for hope in this story. Ahead of COP28 and the vital decisions that need to be taken to slow the impacts of climate change, exploring the intricate connections between population dynamics and climate change uncovers reasons for optimism and pathways towards a more sustainable future.
The urban paradox
Rapid urbanization is a defining characteristic of our time. Over half of the world’s population lives in cities, 80% of GDP is generated in urban areas, and cities account for over 70% of global CO2 emissions. This concentration of people, wealth and resource consumption paints a picture of cities as major emitters and, while this is true, the reality is more complex. Urbanization increases household carbon footprints in developing countries, but studies suggest that the inverse can be true in developed economies thanks to more efficient energy and transport infrastructure. Turku and Dijon, for example, are lowering household and municipal emissions through the installation of quadruple glazed windows and solar panels.
Designing more sustainable urban areas with efficient public transportation and green infrastructure could significantly reduce global emissions and improve quality of life, but only if access to these innovations is equitable for all countries. Furthermore, the sheer number of people and resources in cities means they can serve as hubs of innovation, fostering the development and implementation of sustainable technologies and policies. Cities are some of our largest polluters, but they have the potential to be the source of our greatest sustainability successes.
Reclaiming the climate refugee narrative
Extreme weather events, rising sea levels and ecological disruption are creating climate refugees. According to UNHCR, 21.5 million people have been displaced by weather-related sudden onset disasters – like floods and wildfires – every year since 2008.
But there could be a glimmer of hope. This adversity is compelling governments and individuals to find solutions, develop sustainable practices, and create stronger, more inclusive societies. Marshallese community members and artists, for example, are strengthening ties to their traditional culture and fostering national pride by resisting the narrative that they are helpless in the face of climate change. And climate refugees in Bangladesh are building new lives in climate-resilient areas like Mongla that provide them with jobs, housing and a renewed sense of purpose. Displacement due to climate change will challenge our societies in new ways, but the movement of people has always been a fact of human existence. We can work to create positive outcomes for those affected by it.
Feeding the future
Addressing the nexus between population patterns, climate change and food security is at the top of the sustainability agenda. As many as 811 million people faced hunger in 2020 and that number is continuing to rise. Extreme weather events – like flooding in Pakistan and drought in the Horn of Africa – are threatening more people with starvation through the destruction of crops and livestock, while the environmental impact of food production continues to grow: agriculture accounts for a quarter to a third of global emissions.
Solving world hunger and reducing emissions from food production seem to be totally at odds but there’s significant potential for sustainability success. Eco-friendly farming practices – such as agroforestry, organic farming, and precision agriculture – can help mitigate emissions while enhancing productivity and resilience. Increasing attention is also being given to the sustainable agricultural practices of indigenous peoples, paving the way for greater social cohesion and inclusion of historically marginalized communities. The USDA, for example, is engaged in a national project to revive the indigenous American practice of planting several different crops alongside each other, and new research suggests that indigenous farming knowledge is key to the creation of sustainable food systems. Embracing sustainable agriculture has the potential to increase food security and reduce pressure on natural resources in the same stroke, allowing us to feed future generations.
Optimism amidst challenges
The complex interconnectedness of demography and climate change presents formidable challenges and demands our immediate attention, but the opportunities for positive change are also great. Governments, businesses, and individuals are recognizing the urgency of addressing these issues and are taking action. COP28 will provide an historic opportunity to enable a unified approach to global sustainability efforts and a chance to accelerate positive change.
Optimism is not only possible but necessary if we are to effectively tackle the challenges of climate change and shifting populations together. In many cases, a solution to one is a solution to another – the pursuit of sustainability is inevitably the pursuit of a healthier, happier and more prosperous society
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04 SEP 2024
Cooling our world is warming our planet. Here’s how we can turn down the heat.
As global temperatures climb, we are ramping up our use of air conditioning. The trouble is, the machines cooling our spaces are significant contributors to global warming. The UAE is rising to the challenge, combining ancient wisdom with avant-garde thinking.
Summer 2024 has brought unprecedented global heat, and new records are being set as the mercury rises. As more of us rely on air conditioning to help keep our homes, offices and public spaces comfortable, our contribution to global warming is rising, too: air conditioning causes around 7% of global greenhouse gas emissions.
Enter sustainable cooling. The UN and the International Energy Agency estimate that climate-friendly cooling could help us avoid up to 460 billion tonnes of greenhouse gas emissions over the next four decades. That’s equivalent to more than ten times India’s current annual GHG emissions.
Cooling our lives without warming our planet
Sustainable cooling encompasses a variety of measures we can take right now to help limit the impact of growing global demand for space cooling. These include improving the efficiency of existing cooling systems, innovation to develop more sustainable cooling technologies and measures that lower ambient temperatures in buildings and urban environments.
Crucially, our response to this challenge must be twofold: as well as upgrading and reimagining the infrastructure which enables today’s cooling systems, we have an opportunity to reduce the need for cooling by designing and building cooler environments in the first place.
Reimagining age-old techniques
The Middle East can draw on a long tradition of ‘passive’ architecture and design techniques which can significantly reduce heat. Rather than fighting the elements by deploying elaborate technologies to counter sweltering temperatures with artificial cold, this approach takes advantage of local conditions. The aim is to work in harmony with the existing environment to reduce the temperature of buildings, without the need for power. In the UAE, techniques include shading devices, double glazing and positioning buildings to channel natural ventilation. Buildings can also be designed with higher thermal mass, so they self-regulate by absorbing daytime heat and releasing it at night. Outside, green roofing, evaporative cooling using water features, and the application of light color coatings have all stood the test of time - and the elements.
In Abu Dhabi, for instance, traditional techniques are being reimagined for today’s needs. The sustainable urban community of Masdar City boasts a modern spin on an ancient wind tower or barjeel, which captures the prevailing wind, channeling it down past cooling mist jets into a central courtyard below. The structure, which designers say can reduce the temperature by 5 degrees celsius at street level, is built with metallic, open sides, to help visitors understand the passive design. Just a few steps away, this time-honored Middle Eastern technique also helps keep Siemens employees cool at the tech company’s innovative regional headquarters.
Elsewhere in Masdar City, the striking Al Bahr Towers combine traditional mashrabiya-style shading with 21st-century technology. The towers are adorned with over 1,000 computerized hexagonal shades which can move and adjust throughout the day, providing shade when the sun is at its strongest.
Efficiency and innovation
The Middle East is also pioneering innovative ways to future-proof buildings, rolling out new approaches to sustainable cooling. Among these, Tabreed operates 89 district cooling plants across the UAE and GCC, using chilled water from centralized energy plants to cool whole neighborhoods via underground pipes. The company is also developing ground-breaking geothermal energy which currently meets 10% of Masdar City's cooling needs. Geothermal cooling, which harnesses energy from beneath the Earth’s surface, reduces energy needs by up to 70% compared with traditional air conditioners.
AI is another tool in the race to make cooling sustainable, with companies like Hyperganic combining algorithmic engineering with industrial 3D printing and engineering to iterate at scale. Partnering with Abu Dhabi-based Strata Manufacturing, Hyperganic has created heat exchangers with radically different structures that could lead to residential air conditioning units that consume 10% of the energy that a conventional device uses.
Progress is being made to reduce leakage rates from traditional air conditioning units, mainly through better design and installation practices. In the UAE, Mubadala Investment Company’s aerospace unit Strata has teamed up with European partners to develop the world’s most energy-efficient residential air-conditioning system in the Emirates.
The hunt is also on to find more climate-friendly solutions than hydroflourocarbons (HFCs), including hydrocarbon refrigerants and ammonia. In keeping with international commitments, the UAE plans to freeze the consumption and production of HFCs in 2028. When coupled with enhanced energy-efficiency measures, these can help reduce both direct emissions from refrigerant leakages and indirect emissions from the energy used to power cooling units.
Sustainable cooling on the climate agenda
As hosts of the COP28 climate conference in 2023, the UAE placed sustainable cooling firmly on the agenda. Chief among outcomes was the Global Cooling Pledge, which saw 60 countries commit to reducing the climate impact of the cooling sector. Spearheaded by the Cool Coalition, a global network dedicated to more climate-friendly cooling, the pledge aims to reduce cooling related emissions by 68% by 2050 and to increase the global average efficiency of new air conditioners by 50% by 2030 at the latest.
Described by the IEA as one of the most critical energy issues of our time, cooling is growing increasingly prominent within the climate change conversation. The shift to more sustainable cooling for our warming world is a formidable challenge. While the planet heats up, we need to ensure we’re not throwing fuel on the fire of global warming while we try to cool down.
By merging ancient wisdom with cutting-edge innovation, we can reduce our reliance on energy-intensive cooling systems and work with the planet to create cooler environments. The Middle East, with its rich history of passive cooling techniques and ambitious climate goals, is uniquely positioned to lead this shift. But only through concerted global efforts to improve cooling efficiency, develop climate-friendly alternatives and prioritize sustainable urban planning can we hope to escape this vicious cycle and ensure a habitable planet for generations to come.
15 AUG 2024
The future of water
Covering most of the planet’s surface, water is seemingly one of the most abundant substances on earth. But today, many communities and countries are facing a usable water crisis.
While millions of people worldwide use hundreds of litres of water a day, around 3.6 billion people – almost half of humanity – survives without access to safe, clean water.
More than an inconvenience, access to clean water is essential for human health, growth, wellbeing and safety, so much so that it has been recognized as a human right. A lack of it can be devastating: 1 million people die each year from lack of access to clean water and sanitation, and every two minutes a child dies from a water-borne disease. Women and girls are particularly affected when clean water is in short supply, often tasked with hauling water over long distances for communities, taking them away from education and exposing them to violent attacks or environmental threats.
Without intervention, the next few decades could make this a reality for more and more people worldwide.
With increasing demand from water-intensive industries like agriculture, rising temperatures and shrinking water reserves, there is a real threat that there won’t be enough water for humanity’s needs. It’s a problem that has had experts ringing alarm bells since before 2017.
With access to water so critical, and the problem so pressing, why isn’t water management demanding more global attention? Is anything being done to bring it into wider conversations about sustainability? On today’s trajectory, what’s the future of water?
The future of water as it stands
Two opposing trends paint a grim picture of the future. While global water use is set to skyrocket, global water supplies are already stressed.
To keep up with demand, experts predict that global water use will rise 20-50% as a result of human-driven climate change and overuse. So much groundwater has been pumped out of the earth that it has tilted the planet’s axis.
Heavy use of water is compounded by mismanagement: without policies, infrastructure and conservation efforts, existing water sources are being polluted, wasted or drained. Worldwide, different challenges in managing water are causing water stress for communities: from outdated infrastructure to conflict to overuse, it’s clear that alongside preserving our existing sources of water, understanding how we use what we have as a global community is just as important.
On this trajectory, developing countries will experience water insecurity over longer periods and with greater intensity, while supplies to major industries become strained. Over the next two decades, the increasing water stress will lead to a rise in related inequality, political instability, growing disease and potential sources of conflict in the most affected nations.
How can we change this trajectory?
Top priorities for cleaner, healthier water
As the global community attempts to address the challenge of building a more sustainable future, the issue of water has garnered more attention. While the subject of water has been historically absent from international sustainability efforts like the Paris Agreement, both COP27 and COP28, held in Dubai in one of the world’s most arid regions, recognized water as a priority.
As governments, institutions and communities examine their relationship with water and their future needs, there is an overall consensus that the battle for water must be fought on all fronts. As a complex issue with multiple causes, it calls for many solutions across government, education, technology and industry, all working in tandem.
Individuals – from ordinary households to decision makers at the helm of major corporations – must gain a better understanding of the impact of water usage and consumption. Awareness campaigns like the USA’s Save Our Water can help change behavior and influence change at the individual level. At the national level, governments can leverage policy to support better understanding and use of water management.
Backed by funding, recent innovations in water management technology have the potential to help restore and manage water. Emerging AI and big data technologies, in particular, hold much promise. A pilot project in the Ramotswa Aquifer between South Africa and Botswana, for example, is harnessing AI to analyze water levels in the drought-prone area, helping identify patterns and inform water management decisions. AI-assisted geospatial analysis is also helping smallholders in Ethiopia to identify shallow well locations, something that promises to significantly improve crop yield and access to drinking water.
While new technologies have the potential to help solve significant challenges, prioritizing cost-effective and culturally compatible solutions remains key. Obstacles like supply chain coordination, training and distribution also need to be overcome for effective implementation. Introducing innovative financial instruments like water credits (akin to carbon credits) could incentivize investment in water-related initiatives and contribute to sustainable water management practices worldwide.
Climate Adaptation and Mitigation
The issue of water is inextricably tied to the wider climate emergency. Meeting the Paris goals by reducing carbon emissions, implementing overall climate mitigation measures and adapting to today’s changes are a key part of addressing the water crisis and building safeguards for the future.
Climate adaptation measures can be integrated into water systems and infrastructure and are essential for building resilience to climate change-induced water scarcity and extreme weather events. This involves implementing strategies such as rainwater harvesting, enhancing water storage capacity, and improving flood management systems to mitigate the impacts of climate change and ensure reliable access to water.
More broadly, general climate mitigation efforts are fundamental for addressing the underlying causes of the global water crisis. By mitigating climate change, we can help stabilize weather patterns, reduce the intensity of droughts and floods, and safeguard water resources for future generations.
Water is a critical resource, and its future is in our hands. To help people access water today and ensure water security for tomorrow, the global community must recognize, invest and mobilize to create better water management practices and safeguard the precious water we have remaining. The task is complex, but vital. We must come together to solve the problems we face for a greener, more sustainable future.