Helena Joyce
Pollution is one of the most pressing issues facing the world today. It is a significant health and environmental problem, with air pollution alone causing around 7 million premature deaths each year. The world is waking up to the need to address the root causes of pollution, and organisations such as the World Bank, WHO, and the United Nations Environment Assembly (UNEA) are taking action. This includes providing technical assistance and financing to developing countries, raising awareness of the risks of pollution, and adopting resolutions targeting specific aspects of pollution, such as air quality, water pollution, and soil pollution. The World Air Quality Index project also provides a real-time air quality map for over 80 countries, helping governments and organisations make informed decisions about pollution reduction.
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What You'll Learn
The economic impact of pollution
Pollution is a global issue that affects all forms of life. It is caused by a variety of factors, including industrial activities, agricultural practices, and the burning of fossil fuels. While addressing pollution can be costly, it also presents economic opportunities and is crucial for the well-being of societies and economies worldwide.
Secondly, pollution negatively affects productivity and economic activity. Poor air quality has been linked to reduced workplace productivity, with 1.2 billion workdays lost globally each year, which could reach 3.8 billion by 2060. This loss in productivity has economic repercussions, impacting businesses and economies. Additionally, pollution discourages tourism, further damaging local economies. For instance, polluted beaches in Hawaii, a state heavily reliant on tourism, have led to reduced investment in the area's hotels, restaurants, and recreational activities.
Thirdly, pollution has environmental and ecological consequences that indirectly impact economies. For example, ocean acidification, sea level rise, harm to agriculture, and ecosystem damage affect food production and security, potentially leading to trade and economic issues. Pollution also affects natural resources and ecosystems that provide economic value, such as fisheries and forests.
Addressing pollution is crucial not only for mitigating its economic impacts but also for promoting economic growth and development. Pollution management can enhance resource efficiency, create employment opportunities, and alleviate poverty. For instance, the transition to cleaner energy sources and the development of green technologies can foster innovation and new industries. Additionally, reducing pollution can lower healthcare costs and increase productivity, benefiting economies and societies alike.
Overall, the economic impact of pollution is extensive and complex. It affects healthcare costs, productivity, tourism, and environmental sustainability. Addressing pollution requires a multifaceted approach, including clean-up efforts, regulatory measures, technological advancements, and international cooperation. By tackling pollution, societies can improve economic growth, enhance resource efficiency, and foster healthier and more prosperous communities.
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Reducing air pollution
Air pollution is the leading environmental risk to health, causing around 7 million premature deaths each year. More than 90% of these deaths occur in low- and middle-income countries. The World Bank Group supports developing countries in reducing pollution and promoting clean development. Similarly, the US EPA has taken significant steps to reduce toxic air pollutants and provide health protections for Americans.
Energy Use
Reducing energy consumption helps to reduce air pollution. Using less gasoline, natural gas, and electricity reduces the number of pollutants emitted. Choose efficient appliances and heating systems, and turn off electrical items that are not in use. Switch to clean energy solutions like solar or wind power.
Transport
Transport is a major contributor to air pollution. Where possible, walk or ride a bike instead of driving. When buying a car, opt for the most efficient, lowest-polluting vehicle, or an electric car. Avoid idling your vehicle for more than 30 seconds.
Industry
Industrial activities often lead to an increase in exposure to toxic materials. The EPA has introduced stringent emission standards for industrial sources, as well as for vehicles and engines, to reduce toxic emissions.
Community Action
Community-based initiatives can help to reduce air pollution. For example, the National Clean Diesel Campaign reduces diesel emissions for existing engines, and the SmartWay Transport Partnership promotes efficient goods movement. The Community Action for a Renewed Environment (CARE) program helps communities develop local partnerships and take effective actions to address environmental problems.
Planting Trees
Trees filter pollutants and absorb carbon dioxide, as well as releasing oxygen into the atmosphere. Planting and caring for trees can help to improve air quality.
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Water pollution
According to the United Nations, 80% of wastewater flows back into the environment without being treated or reused, contributing to water pollution. This includes sewage, stormwater runoff, and industrial and agricultural waste. Inadequate management of wastewater means that the drinking water of hundreds of millions of people is contaminated or chemically polluted. Contaminated drinking water can spread diseases such as cholera, dysentery, typhoid, and giardia, causing approximately 505,000 diarrhoeal deaths each year.
Agriculture is the leading cause of water degradation worldwide. Farming and livestock production account for about 70% of global freshwater consumption and contribute significantly to water pollution. Fertilizers, pesticides, and animal waste from agricultural activities wash into waterways, causing nutrient pollution and algal blooms that are harmful to people and wildlife.
To address water pollution, changes to policy and advances in science are necessary. The United Nations has recognized the human right to water and sanitation, and initiatives such as the 'Water for Life' International Decade for Action (2005-2015) have helped improve access to safe drinking water in developing countries. However, more urgent actions are needed to tackle the issue of water pollution, as it continues to endanger the health of millions of people and stall economic growth in many countries.
One strategy to combat water pollution is the reuse of wastewater. While only one in ten liters of treated wastewater is currently reused, this approach can help recover water, nutrients, or energy. Additionally, simple interventions such as covering water storage containers can reduce vector breeding and fecal contamination at the household level.
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Soil pollution
The main anthropogenic sources of soil pollution are the chemicals used in or produced as byproducts of industrial activities; domestic, livestock, and municipal wastes (including wastewater); agrochemicals; and petroleum-derived products. Historical deposition of coal ash used for residential, commercial, and industrial heating, as well as for industrial processes such as ore smelting, were also common sources of contamination in areas that were industrialized before about 1960. Soil pollution can also be caused by accidental spills, corrosion of underground storage tanks, and contaminated rocks or air pollutants.
The contamination of soil is a growing threat to human health and food security. Soil is foundational to human health, as it is needed to grow crops, provide food, and sustain populations. Approximately 78% of the average per capita calorie consumption worldwide comes from crops grown directly in the soil, and another nearly 20% comes from terrestrial food sources that rely indirectly on soil. Soil pollution can reduce crop yields due to toxic levels of contaminants, and crops grown in polluted soils are unsafe for consumption by animals and humans.
The health consequences of exposure to soil contamination vary depending on the pollutant type, the pathway of attack, and the vulnerability of the exposed population. Researchers have found that pesticides and heavy metals in soil may harm cardiovascular health, and chronic exposure to chromium, lead, and other metals, petroleum, solvents, and many pesticide and herbicide formulations can be carcinogenic, cause congenital disorders, or lead to other chronic health conditions. Soil pollution is also a cause of land degradation, which affects at least 3.2 billion people, or 40% of the world's population.
Efforts to address soil pollution include the Global Symposium on Soil Pollution (GSOP18) organized by the Food and Agriculture Organization of the United Nations (FAO) and its Global Soil Partnership (GSP), the World Health Organization (WHO), the Secretariat of the Basel, Rotterdam, and Stockholm Conventions, and the United Nations Environment Programme (UNEP). The symposium aimed to bring together science and policy to understand the status, causes, impacts, and solutions to soil pollution. Additionally, the United Nations has designated World Soil Day on December 5th to raise awareness about the challenges in soil management and soil biodiversity loss and encourage commitments to improving soil health.
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Health impacts of pollution
Air pollution is a major threat to global health and prosperity, causing more than 6.5 million deaths each year. It is a mix of hazardous substances from both human-made and natural sources. Pollutants are emitted by cars, power plants, industrial boilers, refineries, and other sources. These pollutants react with each other and sunlight to form ozone, a powerful lung irritant that causes oxidative stress and inflammation in human cells. This, in turn, may lay the foundation for chronic diseases and cancer.
Short-term exposure to higher levels of air pollution is associated with reduced lung function, asthma, cardiac problems, and hospital admissions. Long-term exposure can lead to a wide range of diseases, including stroke, chronic obstructive pulmonary disease, trachea, bronchus and lung cancers, aggravated asthma, lower respiratory infections, metabolic disorders, and neurological conditions such as cognitive impairment and dementia.
Certain groups are more susceptible to the health impacts of air pollution. These include children, pregnant women, older adults, and individuals with pre-existing heart and lung disease. People in low-socioeconomic neighborhoods and communities may also be more vulnerable due to proximity to industrial sources of pollution, underlying health problems, poor nutrition, and stress. There is strong evidence linking lower socioeconomic status to increased exposure to air pollution.
The health impacts of air pollution are not limited to physical health. There is increasing evidence that non-physical stressors such as poverty, racial/ethnic discrimination, and residency status can amplify the harmful effects of air pollution. Practices such as redlining have impaired the ability of many people of color to build wealth and limited their mobility and political power, making it easier for decision-makers to place sources of pollution in their communities. As a result, people of color are more likely to be exposed to air pollution and to have pre-existing conditions that make them more susceptible to its health impacts.
To address the health impacts of air pollution, interventions such as the World Health Organization's (WHO) monitoring of air pollutants and the European Union's (EU) ambient air quality directives have been implemented. The EU's European Green Deal and Zero Pollution Action Plan aim to improve air quality and reduce the health impacts of air pollution. The Zero Pollution Action Plan has set targets for 2030, including reducing premature deaths from air pollution by more than 55% compared to 2005 levels.
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Frequently asked questions
Air pollution is the biggest environmental health risk, causing 7 million premature deaths each year.
Major outdoor pollution sources include residential energy for cooking and heating, vehicles, power generation, agriculture/waste incineration, and industry.
The World Bank Group supports developing countries in reducing pollution, promoting clean development, and fostering a more circular economy for healthier lives and better livelihood opportunities. The World Health Organization (WHO) also promotes interventions and initiatives for healthy sectoral policies and raises awareness about the risks of air pollution.
In addition to air pollution, the world is also tackling water pollution, soil pollution, marine litter and microplastics, and chemical waste.
