Sylvie Willis
Burning fossil fuels releases gases such as carbon dioxide, methane, and nitrogen oxides, which are harmful to human health and contribute to climate change. Fossil fuels are the dominant cause of global warming, and their combustion accounted for about 74% of total US greenhouse gas emissions in 2022. These gases trap heat in the Earth's atmosphere, leading to rising global temperatures, extreme weather events, and adverse health effects. The health impacts of fossil fuel-generated electricity in the United States are estimated to cost up to $886.5 billion annually, with communities of color and low-income communities bearing a disproportionate burden.
| Characteristics | Values |
|---|---|
| Fossil fuel gases | Bad for human health |
| Type of gases | Nitrogen oxides, sulfur dioxide, carbon monoxide, ammonia, methane, nitrous oxide, carbon dioxide, mercury |
| Health issues | Asthma, cancer, heart disease, premature death |
| Environmental issues | Air pollution, water pollution, plastic pollution, oil spills, acid rain, ocean acidification, extreme weather, biodiversity loss, species extinction, food scarcity |
| Percentage of emissions from fossil fuels | 74% of total U.S. greenhouse gas emissions in 2022; 93% of total U.S. anthropogenic CO2 emissions in the United States in 2022; 89% of global CO2 emissions in 2018 |
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What You'll Learn
Fossil fuel combustion releases harmful gases into the air
In addition to carbon dioxide, fossil fuel combustion also releases other harmful gases, including nitrogen oxides, sulfur dioxide, particulate matter, carbon monoxide, and mercury. These pollutants contribute to air pollution, which has been linked to various health issues, including asthma, cancer, heart disease, and premature death. According to statistics, in the United States alone, 350,000 premature deaths in 2018 were attributed to fossil fuel-related air pollution.
Nitrogen oxides, released from fossil fuel combustion, contribute to the formation of smog and acid rain, which have detrimental effects on the environment. Acid rain can damage crops and forests, harm wildlife, and cause eutrophication in aquatic ecosystems by lowering oxygen levels. Ocean acidification, caused by the absorption of carbon dioxide, also poses threats to marine life, making it more difficult for organisms to build shells and coral skeletons.
The impact of fossil fuel combustion extends beyond air pollution. Oil spills, a common consequence of fossil fuel extraction, transportation, and refining, can have devastating effects on communities, wildlife, and habitats. Additionally, the production and use of fossil fuels contribute to water pollution, as fracking and oil spills contaminate water sources with toxic substances. Furthermore, the combustion of additives in gasoline produces cancer-causing ultra-fine particles and aromatic hydrocarbons, further exacerbating the health risks associated with fossil fuel combustion.
To mitigate the harmful effects of fossil fuel combustion, it is crucial to transition to renewable energy sources and improve energy conservation practices. By reducing our reliance on fossil fuels and adopting cleaner energy alternatives, we can decrease the emission of harmful gases into the atmosphere and improve air quality, ultimately reducing the health risks associated with breathing in these pollutants.
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The gases released contribute to global warming
The combustion of fossil fuels releases gases that contribute to global warming. Fossil fuels consist mainly of carbon and hydrogen. When burned, oxygen combines with carbon to form carbon dioxide (CO2) and with hydrogen to form water (H2O). These reactions release heat, which is used for energy. The combustion of fossil fuels was responsible for about 74% of total US anthropogenic greenhouse gas emissions in 2022.
Carbon dioxide is a greenhouse gas that traps heat in the Earth's atmosphere, causing global warming. The average global temperature has already increased by 1°C, and global temperatures passed the critical 1.5°C milestone for the first time in 2024. Warming above 1.5°C risks further sea level rise, extreme weather events, biodiversity loss, species extinction, food scarcity, and worsening health and poverty for millions worldwide.
The Intergovernmental Panel on Climate Change (IPCC) has found that emissions from fossil fuels are the dominant cause of global warming. In 2018, 89% of global CO2 emissions came from fossil fuels and industry. Coal is the most polluting fossil fuel, responsible for over 0.3°C of the 1°C increase in global average temperatures. Oil releases a significant amount of carbon when burned, contributing approximately a third of the world's total carbon emissions. Natural gas, while promoted as a cleaner energy source, is still a fossil fuel and accounts for a fifth of the world's total carbon emissions.
In addition to carbon dioxide, the combustion of fossil fuels emits other greenhouse gases such as methane (CH4) and nitrous oxide (N2O). Methane is emitted during the production and transport of coal, natural gas, and oil, as well as from agricultural practices and the decay of organic waste. Nitrous oxide is emitted during agricultural, industrial, and combustion activities, as well as wastewater treatment. These gases contribute to the greenhouse effect and global warming.
To mitigate the impact of fossil fuel emissions on global warming, a transition to renewable energy sources and improved energy efficiency is necessary. Reducing energy consumption and conserving energy through measures such as turning off electrical equipment when not in use, buying energy-efficient products, and limiting air conditioning can help minimize airborne pollution and reduce greenhouse gas emissions.
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Fossil fuel emissions cause air pollution and acid rain
Fossil fuel emissions are a major contributor to air pollution and acid rain. When fossil fuels are burned, they release harmful pollutants into the atmosphere, including nitrogen oxides, sulfur dioxide, particulate matter, carbon monoxide, and mercury. These pollutants have detrimental effects on both the environment and human health.
Nitrogen oxides, for example, contribute to the formation of smog and acid rain. Acid rain occurs when sulfur dioxide and nitrogen oxides are released into the atmosphere and combine with water vapour to form acidic compounds. These acidic compounds then fall back to the Earth's surface in the form of rain, fog, snow, or dust, causing damage to ecosystems, crops, forests, and infrastructure.
The burning of fossil fuels, such as coal, oil, and natural gas, is a significant source of nitrogen oxide emissions. In the United States, the transportation sector, including cars, trucks, and other vehicles, is a major contributor to these emissions. To combat this issue, individuals can take steps to conserve energy and reduce their fossil fuel consumption, such as carpooling, using public transportation, or opting for energy-efficient products.
In addition to causing acid rain, fossil fuel emissions have been linked to a range of health issues. Air pollution from burning fossil fuels can lead to asthma, cancer, heart disease, and premature death. Globally, fossil fuel pollution is a contributing factor in one out of every five deaths. The environmental and health impacts of fossil fuels disproportionately affect communities of colour and low-income communities, with higher exposure to particulate matter pollution and increased cancer risks.
The combustion of fossil fuels releases large amounts of carbon dioxide (CO2), a potent greenhouse gas. In 2022, burning fossil fuels accounted for about 74% of total U.S. anthropogenic greenhouse gas emissions. CO2 emissions from fossil fuels trap heat in the Earth's atmosphere, leading to global warming and climate change. The Intergovernmental Panel on Climate Change (IPCC) has warned that urgent reductions in fossil fuel emissions are necessary to limit global warming and mitigate its devastating consequences.
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Burning fossil fuels increases the risk of asthma and cancer
Burning fossil fuels releases gases and particles that are hazardous to human health. Fossil fuels (oil, gas, and coal) release methane, carbon dioxide, nitrogen oxides, and particulate matter when burned. These emissions contribute to air pollution and drive climate change. While everyone is affected by air pollution, people with respiratory conditions like asthma are at a greater risk of adverse health effects.
Asthma is a chronic lung disease that affects nearly 1 in 10 American children. Air pollution from burning fossil fuels can increase the risk of a child developing asthma and trigger attacks in those who already have the condition. Long-term exposure to air pollution, particularly at a young age, can significantly increase the risk of asthma development. Additionally, higher temperatures caused by climate change promote more ground-level ozone pollution, which is a powerful lung irritant and a common trigger of asthma attacks.
Wildfires, which are becoming more frequent and intense due to climate change, produce smoke that contains particle pollution. These tiny particles can reach deep into the lungs and enter the bloodstream, causing asthma attacks and other respiratory issues. Fossil fuel emissions are a significant contributor to climate change and the resulting increase in wildfire activity, further highlighting the indirect impact of burning fossil fuels on asthma risk.
Furthermore, burning fossil fuels increases the risk of cancer. A cancer risk analysis found that the oil and gas sector will put approximately 14 million people in the United States at an increased risk of cancer due to the emission of hazardous air pollutants. These pollutants include benzene, formaldehyde, and acetaldehyde, which have been linked to various types of cancer, including blood cancers and liver cancer. The transportation and processing of fossil fuels can also increase exposure to carcinogens in communities, further elevating cancer risks.
The impact of burning fossil fuels on asthma and cancer risks underscores the importance of transitioning to cleaner energy sources and implementing measures to reduce air pollution. By mitigating climate change and lowering air pollution levels, we can improve public health outcomes and reduce the burden of asthma and cancer on individuals and communities.
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Fossil fuel companies are huge polluters
Fossil fuel gases are harmful to humans to breathe in. When fossil fuels are burned, they release nitrogen oxides into the atmosphere, contributing to the formation of smog and acid rain. These gases also release carbon that would have otherwise remained safely stored deep within the Earth for thousands or even millions of years. This carbon is released as carbon dioxide, a greenhouse gas that traps heat and makes the planet warmer.
The transportation sector is the largest contributor to direct greenhouse gas emissions, with over 94% of the fuel used for transportation being petroleum-based. Fossil fuel combustion accounted for 74% of total U.S. greenhouse gas emissions in 2022, with CO2 emissions from fossil fuel combustion increasing by 8% relative to 2020.
The industrial sector is the third-largest source of direct emissions, with fossil fuels being burned for energy and certain chemical reactions necessary for producing goods from raw materials. Commercial and residential sectors also contribute to emissions, with fossil fuels being burned for heat and refrigeration.
To address these issues, there is a growing wave of companies committing to renewable power. For example, Apple, Facebook, Google, and Ikea have pledged to use 100% renewable energy under the RE100 initiative. Additionally, Volvo has committed to producing only electric or hybrid vehicles from 2019 onwards. While these efforts are encouraging, more urgent measures are needed to rein in the activities of fossil fuel companies and tackle the climate crisis.
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Frequently asked questions
Fossil fuels consist mainly of carbon and hydrogen. When fossil fuels are burned, oxygen combines with carbon to form carbon dioxide (CO2) and with hydrogen to form water (H2O).
Yes, fossil fuel gases are harmful to human health. Fossil fuel gases are hazardous air pollutants that can cause multiple health issues, including asthma, cancer, heart disease, and premature death. Globally, fossil fuel pollution is responsible for one in five deaths.
Fossil fuel gases are released into the atmosphere when fossil fuels are burned for energy. Sources of fossil fuels include coal, natural gas, and oil.
Fossil fuel gases contribute to climate change and global warming by releasing greenhouse gases, such as carbon dioxide, that trap heat in the Earth's atmosphere. They also cause air pollution, leading to acid rain, eutrophication, damage to crops and forests, harm to wildlife, and water pollution from oil spills.
