# Population, Urbanization, and the Environment

## The Environment and Society

The subfield of environmental sociology studies the way humans interact with their environments. This field is closely related to human ecology, which focuses on the relationship between people and their built and natural environment. This is an area that is garnering more attention as extreme weather patterns and policy battles over climate change dominate the news. A key factor of environmental sociology is the concept of carrying capacity, which describes the maximum amount of life that can be sustained within a given area. While this concept can refer to grazing lands or to rivers, we can also apply it to the earth as a whole.

### Climate Change

While you might be more familiar with the phrase “global warming,” climate change is the term now used to refer to long-term shifts in temperatures due to human activity and, in particular, the release of greenhouse gases into the environment. The planet as a whole is warming, but the term climate change acknowledges that the short-term variations in this process can include  both higher and lower temperatures, despite the overarching trend toward warmth.
Climate change is a deeply controversial subject, despite decades of scientific research and a high degree of scientific consensus that supports its existence. For example, according to NASA scientists, 2020 essentially tied with 2016 as the warmest year on record, continuing the overall trend of increasing worldwide temperatures (NASA 2021). One effect of climate change is more extreme weather. There are increasingly more record-breaking weather phenomena, from the number of Category 4 hurricanes to the amount of snowfall in a given winter. These extremes, while they make for dramatic television coverage, can cause immeasurable damage to crops, property, and lives.
So why is there a controversy? Until relatively recently, the United States was very divided on the existence of climate change as an immediate threat, as well as whether or not human activity causes or contributes to it. But now it appears that the U.S. has joined the ranks of many countries where citizens are concerned about climate change; the nation is divided on what to do about it.
Research conducted in 2020 and 2021 indicated that at least 60 percent of Americans believe climate change is a real and immediate threat (UNDP 2021 and Global Strategy Group 2021). Citizens are also more supportive of clean energy and taking part in international efforts, such as the Paris Climate Accord, which is intended to engage countries in actions to limit the activity that leads to climate change. What's changed these opinions? It may be that younger people are more represented in these polls, and they tend to support climate change initiatives more consistently. It may be that the continued severity of weather and the costly and widespread impact is more difficult to ignore than it was previously. And part of the changing opinions might be driven by the prevalence of green energy sources, from wind power to solar power to electric cars, which are more evident to people across the country. However, deep divides remain. The addition of clean energy producers, such as offshore wind farms, typically meet stiff local opposition (similar to the "not in my backyard" discussion earlier in the chapter). And any punitive or price-raising methods of controlling emissions are unlikely to be welcome by U.S. citizens. Finally, global agreements like the Paris Accord will have limited impact because they are not strictly enforceable.
World systems analysis suggests that while, historically, core nations (like the United States and Western Europe) were the greatest source of greenhouse gases, they have now evolved into postindustrial societies. Industrialized semi-peripheral and peripheral nations are releasing increasing quantities of greenhouse gases, such as carbon dioxide. The core nations, now post-industrial and less dependent on greenhouse-gas-causing industries, wish to enact strict protocols regarding the causes of global warming, but the semi-peripheral and peripheral nations rightly point out that they only want the same economic chance to evolve their economies. Since they were unduly affected by the progress of core nations, if the core nations now insist on "green" policies, they should pay offsets or subsidies of some kind. There are no easy answers to this conflict. It may well not be "fair" that the core nations benefited from ignorance during their industrial boom.

### Pollution

Pollution describes what happens when contaminants are introduced into an environment (water, air, land) at levels that are damaging. Environments can often sustain a limited amount of contaminants without marked change, and water, air, and soil can “heal” themselves to a certain degree. However, once contaminant levels reach a certain point, the results can be catastrophic. 

### Water

Typhoid, cholera, and diarrhea from unsafe water kill hundreds of thousands of children each year, and over 160 million children suffer from malnutrition and growth issues due to water issues. An estimated 3 billion people do not have access to clean water at home for hand-washing (CDC 2016). Consider the impact of that, knowing that many of those without water for hand-washing live in agricultural societies in which they work with animals or live in cities with many other people.
The water crisis is exacerbated by many of the other issues we've discussed. Global pandemics, pollution, and climate change all have more severe impacts when coupled with lack of access to clean water. Finally, the cost of obtaining that clean water can interfere with other important aspects of survival and social mobility. Children serve as water haulers, traveling long distances on foot to collect potable water for their family. Those same children (as well as those who similarly collect firewood) are less able to focus on their education, either missing school or not completing the associated work (Water.org 2021). Regular water hauling–which for some people involves carrying 20 kilograms (40 pounds) for 30 minutes or more–also has negative effects on people's bodies, especially pregnant women who often undertake the task. The situation is only getting more dire as the global population increases. Water is a key resource battleground in the twenty-first century.
As every child learns in school, 70 percent of earth is made of water. Despite that figure, there is a finite amount of water usable by humans and it is constantly used and reused in a sustainable water cycle. The way we use this abundant natural resource, however, renders much of it unsuitable for consumption and unable to sustain life. Oil and natural gas production, discussed at the beginning of the chapter, require so much water that there's no safe place to put the wastewater other than deep underground. But more common activities use far more water than many people understand. The immense amount of water to produce almonds (8 percent of California's water supply, equating to roughly one gallon per individual almond) has made headlines, as have the 37 gallons that it takes to produce a cup of coffee. But all crops and livestock have a "water footprint." Dairy milk is actually known to take more water to produce than does almond milk, for example. And steak may take up to 900 gallons of water to produce (WaterCalculuator.org 2020).
Those water costs are important to consider, particularly if the crops are produced in a part of the world where access to safe water is also an issue. But reducing irrigation water usage for U.S. crops would have very limited effects in sub-Saharan Africa. Most experts focus on improving water quality and sanitation in general, as well as reducing the distance people need to travel in order to obtain safe water.
Water pollution has always been a byproduct of industrialization, increased population, and urbanization. Cleveland's Cuyahoga River caught fire several times due to pollution, and was part of what inspired the United States' turn to cleaner water. Other countries are currently undergoing the same crises. As a consequence of population concentrations, water close to human settlements is frequently polluted with untreated or partially treated human waste (sewage), chemicals, radioactivity, and levels of heat sufficient to create large “dead zones” incapable of supporting aquatic life. The methods of food production used by many core nations rely on liberal doses of nitrogen and pesticides, which end up back in the water supply. In some cases, water pollution affects the quality of the aquatic life consumed by water and land animals. As we move along the food chain, the pollutants travel from prey to predator. Since humans consume at all levels of the food chain, we ultimately consume the carcinogens, such as mercury, accumulated through several branches of the food web.

### Soil

You might have read The Grapes of Wrath in English class at some point in time. Steinbeck’s tale of the Joads, driven out of their home by the Dust Bowl, is still playing out today. In China, as in Depression-era Oklahoma, over-tilling soil in an attempt to expand agriculture has resulted in the disappearance of large patches of topsoil. 
Soil erosion and desertification are just two of the many forms of soil pollution. In addition, all the chemicals and pollutants that harm our water supplies can also leach into soil with similar effects. Brown zones where nothing can grow are common results of soil pollution. One demand the population boom makes on the planet is a requirement for more food to be produced. The so-called “Green Revolution” in the 1960s saw chemists and world aid organizations working together to bring modern farming methods, complete with pesticides, to developing countries. The immediate result was positive: food yields went up and burgeoning populations were fed. But as time has gone on, these areas have fallen into even more difficult straits as the damage done by modern methods leave traditional farmers with less than they had to start. 
Dredging certain beaches in an attempt to save valuable beachfront property from coastal erosion has resulted in greater storm impact on shorelines, and damage to beach ecosystems (Turneffe Atoll Trust 2008). These dredging projects have damaged reefs, sea grass beds, and shorelines and can kill off large swaths of marine life. Ultimately, this damage threatens local fisheries, tourism, and other parts of the local economy.

### Garbage

Where is your last cell phone? What about the one before that? Or the huge old television set your family had before flat screens became popular? For most of us, the answer is a sheepish shrug. We don’t pay attention to the demise of old items, and since electronics drop in price and increase in innovation at an incredible clip, we have been trained by their manufacturers to upgrade frequently. 
Garbage creation and control are major issues for most core and industrializing nations, and it is quickly becoming one of the most critical environmental issues faced in the United States. People in the United States  buy products, use them, and then throw them away. Did you dispose of your old electronics according to government safety guidelines? Chances are good you didn’t even know there are guidelines. Multiply your electronics times a few million, take into account the numerous toxic chemicals they contain, and then imagine either burying those chemicals in the ground or lighting them on fire. 
Those are the two primary means of waste disposal in the United States: landfill and incineration. When it comes to getting rid of dangerous toxins, neither is a good choice. Styrofoam and plastics that many of us use every day do not dissolve in a natural way. Burn them, and they release carcinogens into the air. Their improper incineration (intentional or not) adds to air pollution and increases smog. Dump them in landfills, and they do not decompose. As landfill sites fill up, we risk an increase in groundwater contamination.

### Air

China’s fast-growing economy and burgeoning industry have translated into notoriously poor air quality. Smog hangs heavily over the major cities, sometimes grounding aircraft that cannot navigate through it. Pedestrians and cyclists wear air-filter masks to protect themselves. In Beijing, citizens are skeptical that the government-issued daily pollution ratings are trustworthy. Increasingly, they are taking their own pollution measurements in the hopes that accurate information will galvanize others to action. Given that some days they can barely see down the street, they hope action comes soon (Papenfuss 2011).
Humanity, with its growing numbers, use of fossil fuels, and increasingly urbanized society, is putting too much stress on the earth’s atmosphere. The amount of air pollution varies from locale to locale, and you may be more personally affected than you realize. How often do you check air quality reports before leaving your house? Depending on where you live, this question can sound utterly strange or like an everyday matter. Along with oxygen, most of the time we are also breathing in soot, hydrocarbons, carbon, nitrogen, and sulfur oxides.
Much of the pollution in the air comes from human activity. How many college students move their cars across campus at least once a day? Who checks the environmental report card on how many pollutants each company throws into the air before purchasing a cell phone? Many of us are guilty of taking our environment for granted without concern for how everyday decisions add up to a long-term global problem. How many minor adjustments can you think of, like walking instead of driving, that would reduce your overall carbon footprint?
Remember the “tragedy of the commons.” Each of us is affected by air pollution. But like the herder who adds one more head of cattle to realize the benefits of owning more cows but who does not have to pay the price of the overgrazed land, we take the benefit of driving or buying the latest cell phones without worrying about the end result. Air pollution accumulates in the body, much like the effects of smoking cigarettes accumulate over time, leading to more chronic illnesses. And in addition to directly affecting human health, air pollution affects crop quality as well as heating and cooling costs. In other words, we all pay a lot more than the price at the pump when we fill up our tank with gas.

### Toxic and Radioactive Waste

Radioactivity is a form of air pollution. While nuclear energy promises a safe and abundant power source, increasingly it is looked upon as a danger to the environment and to those who inhabit it. We accumulate nuclear waste, which we must then keep track of long term and ultimately figure out how to store the toxic waste material without damaging the environment or putting future generations at risk.
The 2011 earthquake in Japan illustrates the dangers of even safe, government-monitored nuclear energy. When disaster occurs, how can we safely evacuate the large numbers of affected people? Indeed, how can we even be sure how far the evacuation radius should extend? Radiation can also enter the food chain, causing damage from the bottom (phytoplankton and microscopic soil organisms) all the way to the top. Once again, the price paid for cheap power is much greater than what we see on the electric bill.
The enormous oil disaster that hit the Louisiana Gulf Coast in 2010 is just one of a high number of environmental crises that have led to toxic residue. They include the pollution of the Love Canal neighborhood of the 1970s to the Exxon Valdez oil tanker crash of 1989, the Chernobyl disaster of 1986, and Japan’s Fukushima nuclear plant incident following the earthquake in 2011. Often, the stories are not newsmakers, but simply an unpleasant part of life for the people who live near toxic sites such as Centralia, Pennsylvania and Hinkley, California. In many cases, people in these neighborhoods can be part of a cancer cluster without realizing the cause. 

### Environmental Racism

Environmental racism refers to the way in which minority group neighborhoods (populated primarily by people of color and members of low socioeconomic groups) are burdened with a disproportionate number of hazards, including toxic waste facilities, garbage dumps, and other sources of environmental pollution and foul odors that lower the quality of life. All around the globe, members of minority groups bear a greater burden of the health problems that result from higher exposure to waste and pollution. This can occur due to unsafe or unhealthy work conditions where no regulations exist (or are enforced) for poor workers, or in neighborhoods that are uncomfortably close to toxic materials. 
The statistics on environmental racism are shocking. Research shows that it pervades all aspects of African Americans' lives: environmentally unsound housing, schools with asbestos problems, facilities and playgrounds with lead paint. A twenty-year comparative study led by sociologist Robert Bullard determined “race to be more important than socioeconomic status in predicting the location of the nation’s commercial hazardous waste facilities” (Bullard et al. 2007). His research found, for example, that Black children are five times more likely to have lead poisoning (the leading environmental health threat for children) than their White counterparts, and that a disproportionate number of people of color reside in areas with hazardous waste facilities (Bullard et al. 2007). Sociologists with the project are examining how environmental racism is addressed in the long-term cleanup of the environmental disasters caused by Hurricane Katrina.
Why does environmental racism exist? The reason is simple. Those with resources can raise awareness, money, and public attention to ensure that their communities are unsullied. This has led to an inequitable distribution of environmental burdens. Another method of keeping this inequity alive is NIMBY protests. Chemical plants, airports, landfills, and other municipal or corporate projects are often the subject of NIMBY demonstrations. And equally often, the NIMBYists win, and the objectionable project is moved closer to those who have fewer resources to fight it. 

### Summary

The area of environmental sociology is growing as extreme weather patterns and concerns over climate change increase. Human activity leads to pollution of soil, water, and air, compromising the health of the entire food chain. While everyone is at risk, poor and disadvantaged neighborhoods and nations bear a greater burden of the planet’s pollution, a dynamic known as environmental racism.

### Section Quiz


### Short Answer


### Further Research

Visit the Cleanups in My Community web site to see where environmental hazards have been identified in your backyard, and what is being done about them.
What is your carbon footprint? Find out using the carbon footprint calculator.
Find out using the water footprint calculator.

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