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Costs of War

Environmental

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Environmental

Destroyed apartments in Fallujah
Photo credit: Kali Rubaii, (2021), Fallujah, Iraq.

Wars and military operations contribute significantly to climate change. Military jets and vehicles consume petroleum-based fuels at an extremely high rate, and the vehicles used in the war zones produce tons of carbon monoxide, nitrogen oxides, hydrocarbons, and sulfur dioxide in addition to CO2.

Residents of war zones and soldiers suffer many negative health consequences of war’s environmental wreckage. Bombs and other munitions contain toxic substances, including heavy metals, white phosphorous, depleted uranium, and dioxin, that, in addition to causing horrific injuries, contaminate soil, water, and vegetation in the aftermath of fighting. Explosive weapons destroy buildings, generating debris and releasing hazardous materials such as asbestos, industrial chemicals, and fuels. Explosives also destroy water supplies and sanitation facilities, leading to pollution from sewage and solid waste. In rural areas, bombing decreases soil quality and inhibits agriculture by disrupting topography, forming craters, and altering drainage patterns. Unexploded remnants of war remaining in the land injure and kill people for years after the active fighting has ended. 

U.S. military bases in Iraq, Afghanistan, and elsewhere contaminate their surrounding environments with oil spills and other toxic chemicals. U.S. military burn pits – open air incinerators used to burn broken-down tanks, the detritus of weapons, computers, batteries, aerosols, metals, and many other types of industrial, military, and medical debris – contaminate the air, ground water, and soil and expose soldiers and civilians to dangerous health pollutants.

At times, environmental destruction is an intentional weapon of war. Ecosystems, animal and bird populations are adversely affected.

Key Findings

  • The U.S. Department of Defense is the world’s single largest institutional consumer of oil – and as a result, one of the world’s top greenhouse gas emitters.
  • Environmental contamination is an important and understudied causal pathway to “indirect deaths” due to war. For example, U.S. service members have suffered from respiratory problems, headaches, and cancers due to their exposure to burn pits in Iraq, and local people living near burn pits say they have similar symptoms.
  • People who live, or return to live, in bombarded areas may be at a higher risk of reproductive health harms and other health problems such as cancer. The population of Fallujah, Iraq faced a 17-fold increase in birth anomalies linked with bombardments from the 2003 U.S. invasion and later occupation by ISIS. Bone sampling research in Fallujah detected high rates of environmental toxins.

  • Afghanistan is one of the most landmine- and unexploded ordnance-impacted countries in the world. From 2001 through 2018, the Afghanistan government reported 14,693 civilians injured and 5,442 killed from landmines and other explosive remnants of war.

  • Many U.S. and U.K. workers in military industries are frustrated with the environmental costs of their field and would welcome a transition to working in the green economy. The military can redirect its weapons and technological production capacity towards civilian uses and decarbonize the U.S. economy, given the right policy environment.

 

(Page updated as of May 2025)

Related Papers

Lessons from Fallujah: War Returnees Face Long-Term Health Risks from Heavy Metal Exposure

Published : March 24, 2025
TAGS : Kali Rubaii

Interdisciplinary authors Kali Rubaii, Mark Griffiths, Ellen Wells, Aaron Specht, Ian Lindsay, Samira Alani, and Abdulqader Alrawi (Purdue University, Newcastle University, Fallujah Women and Children’s Hospital) conducted biological, environmental, and anthropological research in Fallujah, Iraq. They find that people who have returned to bombarded homes and neighborhoods may face increased risk of negative health impacts from heavy metal exposure, both for themselves and for future generations. 

How Death Outlives War: The Reverberating Impact of the Post-9/11 Wars on Human Health

May 15, 2023
TAGS : Stephanie Savell

Anthropologist and Costs of War Director Stephanie Savell (Senior Fellow, Brown University) examines how war’s destruction of economies, public services, infrastructure, and the environment leads to deaths that occur long after bombs drop and grow in scale over time. Dr. Savell reviews the latest research to examine the causal pathways that have led to an estimated 3.6-3.8 million indirect deaths in post-9/11 war zones, including Afghanistan, Pakistan, Iraq, Syria, and Yemen. The total death toll in these war zones could be at least 4.5-4.7 million and counting, though the precise mortality figure remains unknown. Some people were killed in the fighting, but far more, especially children, have been killed by the reverberating effects of war, such as the spread of disease. 

From a Militarized to a Decarbonized Economy: A Case for Conversion

Published : January 26, 2023
TAGS : Miriam Pemberton

Economist Miriam Pemberton (Associate Fellow at the Institute for Policy Studies) describes how, when the U.S. military budget decreased after the Cold War, military contractors initiated a strategy to protect their profits by more widely connecting jobs to military spending. They did this by spreading their subcontracting chains across the United States and creating an entrenched war economy. Perhaps the most infamous example: Lockheed Martin’s F-35 fighter jet, which is built in 45 states.

U.K. and U.S. Defense Worker Views on the Environmental Costs of War and Military Conversion

Published : January 26, 2023
TAGS : Karen Bell

According to environmental policy scholar Karen Bell (Senior Lecturer, University of Glasgow), with humanity now facing the possibility of catastrophic and irreversible climate change, the environmental costs of the world’s military industries are increasingly being recognized as a significant part of the problem. Dr. Bell's research demonstrates that this realization now even extends to the defense companies and weapons-exporting governments, themselves, who are currently in the process of discussing how to ‘green’ defense. How to do so is a topic of debate amongst industry officials, environmentalists, policy makers, and others.

Pentagon Fuel Use, Climate Change, and the Costs of War

Published : November 19, 2019
TAGS : Neta C. Crawford

The U.S. Department of Defense is the largest institutional consumer of fossil fuels in the world and
a key contributor to climate change.

Environmental Rehabilitation and Global Profiteering in Wartime Iraq

Published : April 23, 2017
TAGS : Bridget Guarasci

The wartime initiative to restore Iraq’s southern marshes, according to American
media, the United Nations, and the Iraqi government, has been a resounding success. Behind the scenes, however, environmentalism in Iraq has created a political
opportunity for foreign corporations seeking a way into the country’s cache of natural
resources.

Respiratory Disorders Following Service in Iraq

TAGS : Robert Miller

Inhalational exposures in Iraq and Afghanistan have received a lot of attention due
to the number of troops involved and a high incidence of respiratory complaints
linked to service.

Health and Health Care Decline in Iraq: The Example of Cancer & Oncology

TAGS : Mac Skelton

With a focus on the example of cancer and oncology in Iraq, this
article provides windows into both the decline of health and health care and the ways in
which this decline has been contested, debated, and silenced.

Contributors

  • Karen Bell

    Karen Bell

    Senior Lecturer in Sustainable Urban Development
    karen.bell.2@glasgow.ac.uk
  • Neta C. Crawford

    Neta Crawford

    Montague Burton Professor, University of Oxford , Co-Founder and Strategic Advisor, Costs of War
    netaccrawford@gmail.com
  • Bridget Guarasci

    Bridget Guarasci

    Assistant Professor of Anthropology, Franklin & Marshall College
    bguarasc@fandm.edu
  • Robert Miller

    Robert Miller

    Associate Professor of Pulmonary Medicine, Vanderbilt University
    robert.miller@vanderbilt.edu
  • Miriam Pemberton

    Miriam Pemberton

    Associate Fellow at the Institute for Policy Studies
    miriam@ips-dc.org
  • Kali Rubaii

    Kali Rubaii

    Assistant Professor in the Department of Anthropology at Purdue University
    kali.rubaii@gmail.com
  • Stephanie Savell

    Stephanie Savell

    Senior Fellow, Watson Institute for International and Public Affairs, Brown University, Director, Costs of War
  • Mac Skelton

    Mac Skelton

    Executive Director of the Institute of Regional and International Studies at the American University of Iraq, Sulaimani
    mac.skelton@auis.edu.krd
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