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In 1970-1971 he unexpectedly emerged as a great environmentalist who deserves credit for several of the most important environmental laws in American history. By 1972, however, he suddenly moved far to the right, despising environmentalists as left-wing fanatics who would bankrupt the economy.
1947 – Los Angeles Air Pollution Control District created; first air pollution agency in the US. 1948 – Federal Water Pollution Control Act; 1955 – National Air Pollution Control Act; 1959 – California Motor Vehicle Pollution Control Board created to test automobile emissions and set standards.
Trail Smelter in 1929. The Trail Smelter dispute was a trans-boundary pollution case involving the federal governments of both Canada and the United States, which eventually contributed to establishing the harm principle in the environmental law of transboundary pollution.
1979 — The Convention on Long-Range Transboundary Air Pollution is established to reduce air pollutant emissions and acid rain. — Three Mile Island accident, worst nuclear power accident in US history. — Hans Jonas publishes The Imperative of Responsibility: In Search of Ethics for the Technological Age.
This timeline lists events in the external environment that have influenced events in human history. This timeline is for use with the article on environmental determinism. For the history of humanity's influence on the environment, and humanity's perspective on this influence, see timeline of history of environmentalism.
Pollution from the Exxon Valdez oil spill. As with many countries, pollution in the United States is a concern for environmental organizations, government agencies, and individuals. Billions of pounds of toxic chemicals are released into the air, land, and waterways in the U.S. each year.
According to a 2024 report: "39% of people living in America—131.2 million people—still live in places with failing grades for unhealthy levels of ozone or particle pollution." Analyzing data from 2020 to 2022, the American Lung Association found the number of people living in counties with a failing grade for ozone declined, this year by 2 ...
Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.