AP Syllabus focus:
‘Pollution, resource depletion, and major accidents fueled a growing environmental movement that demanded action to protect natural resources.’
Public concern over pollution, ecological degradation, and dramatic environmental disasters surged after 1968, inspiring a broad modern environmental movement that demanded new protections for land, water, air, and public health.
Growing Awareness of Environmental Crisis
Americans in the late 1960s recognized that rapid postwar industrial growth brought significant environmental costs. Expanding chemical production, suburbanization, and energy consumption accelerated pollution, including smog in major cities and contamination of rivers and lakes.

This photograph shows the Los Angeles skyline obscured by thick smog, illustrating how air pollution became a visible environmental crisis by the early 1970s. The haze highlights the health and ecological dangers created by rapid postwar growth. The image includes buildings and roadways not required by the syllabus but helps convey how pollution enveloped entire urban environments. Source.
Scientific studies highlighted how unchecked development threatened ecological balance, helping shift public debate from local conservation issues to national questions about resource depletion and long-term sustainability.
The Influence of Science and Media
Works by scientists and journalists helped transform environmental concerns into mainstream political issues. Rachel Carson’s Silent Spring (1962) warned that pesticides disrupted ecosystems and threatened human health, prompting national discussion about chemical regulation. Television coverage of burning rivers or oil-covered coastlines made environmental destruction visible, pushing Americans to view pollution as a profound societal problem rather than an inevitable by-product of progress.
Ecosystem: A community of organisms interacting with one another and with their physical environment.
This growing ecological consciousness expanded the scope of environmental activism and framed environmental harm as a national emergency requiring federal leadership.
Major Accidents and the Demand for Action
Highly publicized accidents intensified pressure for reform. Among the most influential was the 1969 Santa Barbara oil spill, which coated California beaches with crude oil, killed wildlife, and demonstrated the risks of offshore drilling.

This photograph shows Platform A, the offshore drilling structure whose blowout caused the 1969 Santa Barbara oil spill, sparking national outrage and reform efforts. Although taken years later, the image represents the type of infrastructure associated with environmental risk. Ocean and coastline details not required by the syllabus help convey the spill’s coastal context. Source.
Why Accidents Galvanized Public Opinion
Major disasters functioned as turning points because they revealed the cumulative effects of industrial pollution. Americans saw that environmental degradation was not isolated but systemic. These events prompted the belief that voluntary industry regulation was insufficient, encouraging demands for stronger federal action to protect natural resources.
The Expansion of Environmental Activism
By the late 1960s and early 1970s, the United States experienced a dramatic resurgence of environmental activism. Citizens’ groups, scientists, and youth activists launched campaigns to preserve forests, improve air and water quality, and safeguard public lands.
Grassroots Organizing
Local campaigns emerged to oppose hazardous waste disposal, highway construction through neighborhoods, and destruction of natural habitats. Many of these groups adopted democratic, community-based strategies that reflected broader reform impulses of the era.
Key forms of activism included:
Public protests and teach-ins educating communities about pollution.
Litigation challenging industrial polluters or weak regulatory enforcement.
Lobbying efforts aimed at expanding federal responsibility for environmental stewardship.
Stewardship: The responsible management and care of natural resources for long-term sustainability.
Environmentalists used these tools to pressure elected officials to adopt comprehensive protections that extended beyond local remediation.
The Emergence of a National Movement
Environmental activism transitioned from scattered local initiatives to a coordinated national movement. This shift reflected the broader postwar trend of citizens mobilizing to demand government action on social problems.
Earth Day and Mass Mobilization
The first Earth Day in April 1970 marked the movement’s growing strength.
Bipartisan Support for Environmental Reform
During this period, both major political parties supported stronger environmental protections. Cold War concerns about national strength intersected with environmental goals, as leaders argued that pollution threatened public health, economic vitality, and America’s global image. This unusual bipartisan alignment created momentum for significant federal legislation.
New Priorities in National Policy
Public activism and widespread recognition of environmental crisis compelled the federal government to adopt new regulatory frameworks in the early 1970s. Although this subsubtopic focuses on the rise of the movement rather than subsequent policies, understanding emerging priorities clarifies why reform proved politically urgent.
Key Legislative and Institutional Goals
While the creation of specific agencies is addressed in later topics, the rise of the movement shaped several broad objectives:
Reducing air and water pollution to protect human health.
Conserving finite natural resources, including water, forests, and fossil fuels.
Responding quickly to industrial accidents and enforcing environmental standards.
Expanding scientific research to guide environmental decisions.
These goals reflected the public’s belief that environmental protection was a core responsibility of modern government.
Linking Crisis to Long-Term Environmentalism
By the end of the 1970s, environmentalism had become a durable political force. Americans increasingly viewed environmental stewardship as essential to national well-being. The crises and accidents of the late 1960s served not only as warnings but as catalysts for a movement that demanded comprehensive, federally supported solutions to protect the nation’s natural resources for future generations.
FAQ
Many communities experienced visible or tangible pollution—such as foul-smelling rivers, dying fish populations, or smog that irritated eyes and lungs—well before these problems received national coverage.
Local newspapers and citizen groups often documented these issues, creating grassroots awareness.
These early observations laid the groundwork for broader mobilisation once scientific studies and national media amplified environmental concerns.
Universities served as hubs for scientific research, interdisciplinary discussion, and youth activism. Students and faculty organised teach-ins, lectures, and research projects that helped translate ecological science into public advocacy.
This academic engagement helped legitimise environmental concerns and supplied the movement with both scientific credibility and organisational leadership.
Concerns about finite resources grew alongside rising consumption, technological expansion, and fears that natural limits could threaten economic stability and national power.
Public debates highlighted:
• Rapid population growth
• Expanding industrial output
• Declining air and water quality
Together, these factors made long-term sustainability a pressing national issue.
Television brought dramatic visuals—burning rivers, oil-coated wildlife, and smog-covered cities—directly into American homes, making environmental damage impossible to ignore.
Unlike printed reports, moving images conveyed urgency and emotional weight, helping transform environmentalism from a niche scientific concern into a mass political movement.
A wide range of organisations appeared, from local conservation clubs to national advocacy groups focused on pollution control and ecological protection.
Their activities included:
• Monitoring industrial waste
• Challenging harmful development projects
• Lobbying state and federal officials
• Educating the public through campaigns and community events
These groups built the organisational infrastructure necessary for the environmental movement’s rapid expansion.
Practice Questions
Question 1 (1–3 marks)
Identify and briefly explain one major environmental accident that contributed to the rise of the environmental movement in the late 1960s and early 1970s.
Question 1
• 1 mark for correctly identifying a relevant accident (e.g., 1969 Santa Barbara oil spill; Cuyahoga River fire).
• 1 mark for describing the nature of the accident (e.g., oil spill coating beaches; river catching fire due to industrial waste).
• 1 mark for explaining how the accident increased public concern or contributed to demands for environmental reform.
Question 2 (4–6 marks)
Explain how growing public awareness of pollution and resource depletion contributed to the emergence of a national environmental movement in the United States during the late 1960s and early 1970s.
Question 2
• 1–2 marks for describing sources of public awareness (e.g., scientific studies, media coverage, publication of Silent Spring).
• 1–2 marks for explaining how concerns over pollution or environmental degradation influenced public attitudes (e.g., recognition of systemic harm; fears over long-term sustainability).
• 1–2 marks for analysing how these concerns translated into national mobilisation (e.g., grassroots activism, Earth Day participation, pressure for federal regulation).
