Brian Barton
Pollution is not a new phenomenon. It has been a problem since the emergence of our earliest ancestors, with human population growth leading to more bacteria and disease. During the Middle Ages, for example, unsanitary conditions caused by human and animal waste resulted in diseases such as cholera and typhoid fever across Europe. The Industrial Revolution in the mid-19th century, however, marked a significant shift, introducing new sources of air and water pollution. By the 20th century, the adverse effects of these changes were being felt globally, with the 1960s seeing the emergence of an environmental movement that led to legislative victories like the Clean Air Act and Clean Water Act in the 1970s. Today, pollution continues to have widespread consequences, causing approximately nine million deaths worldwide in 2019, with three-quarters of those being attributed to air pollution.
| Characteristics | Values |
|---|---|
| Start of pollution | Since the appearance of the earliest ancestors |
| Agrarian communities | 8,000-12,000 years ago |
| Industrial Revolution | 18th to 19th centuries |
| Environmental movement | Mid-20th century |
| Environmental legislation | 1950s-1970s |
| Global awareness of climate change | 21st century |
| Major forms of pollution | Air, water, land, noise, light, plastic, soil, radioactive, thermal, visual |
| Global deaths due to pollution | 9 million in 2019 |
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What You'll Learn
The Industrial Revolution
Pollution has been a problem since the earliest human ancestors, with bacteria and disease spreading due to increasing populations. However, the Industrial Revolution (late 18th to early 20th centuries) marked a significant shift in the nature and scale of pollution, with long-lasting consequences that continue to impact the planet today.
However, the Industrial Revolution also had a profound environmental impact, introducing environmental pollution as we know it today. This period marked the start of our intensive use of fossil fuels, particularly coal, which became the primary energy source for powering factories, machines, industries, and automobiles. The unchecked burning of coal and other hydrocarbons released pollutants, particulate matter, and toxicants into the atmosphere, severely degrading air quality. Industrial centres became shrouded in smog, causing widespread health issues for residents and workers alike.
Furthermore, the reliance on fossil fuels led to large-scale extraction and a sharp increase in carbon emissions, driving global warming and climate change. The combustion of coal released significant amounts of sulfur dioxide and nitrogen oxides, posing serious environmental and health threats. The rapid industrialisation and urbanisation also resulted in water pollution, as industries freely disposed of their waste into rivers, lakes, and other water bodies. The waste discharged often contained hazardous chemicals, heavy metals, and toxic compounds, leading to widespread water contamination.
The lack of awareness and concern for the environment during this period exacerbated the impact of water pollution, creating a legacy of environmental degradation that persists today. The Industrial Revolution's environmental consequences were far-reaching, and it laid the groundwork for the global challenges we face today regarding pollution, emissions, and finite resource depletion.
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The Nuclear Era
The term "pollution" in the modern environmental sense was rarely used before the 1860s. However, pollution has been a problem since the emergence of our earliest ancestors. With the advent of agriculture 11,000 years ago, human populations increased, leading to more bacteria and diseases. During the Middle Ages, diseases like cholera and typhoid fever broke out across Europe due to unsanitary conditions caused by human and animal waste.
The Industrial Revolution, which began in the late 1700s, marked a significant shift in environmental pollution. The burning of coal and the concentration of horses in cities contributed to air pollution, and water pollution became a pressing issue, with rivers like the Cuyahoga in the US and the Tawe in Wales severely contaminated by industrial waste.
The development of nuclear technology also had implications beyond energy production, including nuclear warfare, the Cold War, and the risk of nuclear disasters. The discovery of radioactivity and its role in atomic science further complicated the separation of peaceful and military uses of nuclear technology.
Today, pollution from various sources, including industrial processes, transportation, and agriculture, continues to impact human health and the environment. Efforts to mitigate pollution have led to the establishment of environmental agencies and the implementation of regulations and policies aimed at improving air and water quality.
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The Agricultural Revolution
The revolution introduced practices such as land enclosure, selective breeding, and metal cultivation. Additionally, the development of agri-science, experimentation, and scientific application played a crucial role in improving agricultural practices, particularly in transportation and mechanization. This led to an increase in yields per unit area, allowing more people to be fed from the same land.
While the Agricultural Revolution set the stage for these subsequent industrial developments, it also had its own environmental implications. The Green Revolution, which emerged in the early 20th century and spread globally until the late 1980s, transformed agriculture through new technologies, high-yielding crop varieties, chemical fertilizers, pesticides, and controlled irrigation. However, this revolution led to inappropriate and excessive use of agrochemicals, inefficient water use, loss of biodiversity, water and soil pollution, and reduced crop diversity.
The Green Revolution's focus on increasing crop yields to combat starvation neglected the nutritional quality of the crops. While it successfully addressed hunger, malnutrition became prevalent due to deficiencies in iron, vitamins, and other essential nutrients. Thus, the Agricultural Revolution, through the Green Revolution, has had a complex impact on the environment and human health, shaping the trajectory of pollution and agricultural practices worldwide.
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The Spanish Conquest of South America
Pollution has been a problem since the emergence of our earliest ancestors. During the Middle Ages, for instance, diseases like cholera and typhoid fever swept across Europe due to unsanitary conditions caused by human and animal waste. However, the Industrial Revolution gave birth to environmental pollution as we know it today, with the burning of coal and wood, and the presence of many horses in concentrated areas, making cities the primary sources of pollution.
Now, onto the Spanish Conquest of South America. This conquest was driven by the search for material wealth, the enhancement of the conquerors' and the crown's position, and the expansion of Christianity to the exclusion of other religious traditions. It can be summed up by the phrase "gold, glory, God".
In 1492, Columbus made his first voyage to the West Indies, marking the beginning of effective Spanish settlement in the Caribbean. Columbus had vast powers of governance over this unknown part of the world, granted to him by the monarchs. In 1493, he brought livestock, seeds, and agricultural equipment, founding the settlement of La Isabela on Hispaniola (now Haiti and the Dominican Republic).
In the 1560s, the Spanish colonization of South America continued with the conquest of Chile, led by Pedro de Valdivia, and the conquest of Costa Rica, led by Juan de Cavallón. However, the Spanish southward colonization in Chile halted after the conquest of the Chiloé Archipelago in 1567 due to the harsh climate and the lack of a populous indigenous population. Meanwhile, in Central America, Alvarado participated in the conquests of Peru and northern Mexico.
During this period, the Spanish also took over the Inca mines in South America, becoming the world's first industrial-scale toxic metal air polluters. They introduced a new technique called amalgamation, which allowed them to process ores with high levels of lead. This led to a dramatic spike in lead concentrations, as evidenced by ice cores from Quelccaya in Peru.
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The Clean Air Act
Pollution is not a new phenomenon. It has been a problem since the emergence of our earliest ancestors. Population growth has opened the door to more bacteria and disease. During the Middle Ages, for example, unsanitary conditions caused by human and animal waste, as well as garbage, led to diseases such as cholera and typhoid fever across Europe.
The Industrial Revolution gave birth to environmental pollution as we know it today. The burning of coal and wood, as well as the presence of many horses in concentrated areas, made cities the primary sources of pollution. London, for example, recorded one of the earliest extreme cases of water quality problems with the Great Stink on the Thames in 1858.
In the United States, Congress designed and initially enacted the Clean Air Act (CAA) in 1963 to combat a variety of air pollution problems and to tackle emerging pollution threats. It is the United States' primary federal air quality law, intended to reduce and control air pollution nationwide. The Clean Air Act is the comprehensive federal law that regulates air emissions from stationary and mobile sources. It authorises the Environmental Protection Agency (EPA) to establish National Ambient Air Quality Standards (NAAQS) to protect public health and public welfare and to regulate emissions of hazardous air pollutants.
One of the goals of the Act was to set and achieve NAAQS in every state by 1975 to address the risks posed by certain widespread air pollutants. The Act called for states and the EPA to solve multiple air pollution problems through programs based on the latest science and technology information. The Act was amended in 1977 and 1990 to set new goals (dates) for achieving NAAQS, as many areas of the country had failed to meet the deadlines.
The 1990 Clean Air Act Amendments revised Section 112 to require the issuance of technology-based standards for major sources and certain area sources. "Major sources" are defined as stationary sources or groups of stationary sources that emit or have the potential to emit 10 tons per year or more of a hazardous air pollutant or 25 tons per year or more of a combination of hazardous air pollutants. The amendments also established a national operating permits program and strengthened enforcement to ensure better compliance with the Act.
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Frequently asked questions
Pollution has been a problem since the emergence of our earliest ancestors. The use of fire and the pursuit of specific foods may have altered the natural composition of plant and animal communities.
During the Middle Ages, diseases like cholera and typhoid fever were spread across Europe due to unsanitary conditions caused by human and animal waste. In the 16th century, the Spanish conquest of South America led to the release of clouds of lead dust over the Andes.
In the mid-20th century, an awareness of the need to protect the environment from pollution emerged among the general public. The publication of Rachel Carson's book *Silent Spring* in 1962 brought attention to the environmental damage caused by pesticides.
The Industrial Revolution accelerated the magnitude of emissions and the spread of pollution across countries. London recorded one of the earliest extreme cases of water quality problems with the Great Stink on the Thames in 1858.
