By Published: April 18, 2024

CU 色吧亚洲 professors explain Earth Day鈥檚 history, impact, what it鈥檚 become and if it鈥檚 still relevant


If you were at the University of Colorado 色吧亚洲 in April 1970, you were likely aware鈥晇ery aware鈥昽f the first Earth Day on April 22. CU 色吧亚洲 was all in and almost stretched the day into a full week, kicking things off on April 18 when the campus was dotted with green flags and abuzz with special events, speeches, films, symposiums, rap sessions and panels.

CU 色吧亚洲 was just one of about 1,500 universities celebrating Earth Day, not to mention 20 million Americans and more than 10,000 cities, churches and other organizations, says Paul Sutter,听a CU professor of environmental history.

That first Earth Day went viral long before viral was cool. No social media, no email blasts, no group texts. Just TV, radio, word of mouth and, in 色吧亚洲, an old-fashioned paper-and-ink brochure listing the scheduled events.

鈥淥ne of the remarkable things is that Earth Day came out of nowhere and was organized quickly, bringing together large numbers of activists who had worked separately before and had not put a name to their movement yet,鈥 Sutter says.

Paul Sutter and Steve Vanderheiden

CU 色吧亚洲 scholars Paul Sutter (left) and Steve Vanderheiden have studied Earth Day's history and impact.

鈥淓arth Day was also decentralized, which meant that it manifested itself in different ways in different places. This was one key to its success. In many ways, we鈥檝e forgotten how powerful and radical these events were. Organizing these events helped to democratize environmentalism.鈥

So what led to that first Earth Day? And have subsequent Earth Days had the same impact?

Some, including Sutter, say the time was right and argue that even though it sprouted quickly, there were forces at work decades before its birth. 听

鈥淎mericans emerged from WWII concerned about the destructiveness of the war and the state of the global environment鈥昿articularly the relationship between population growth and natural resources,鈥 Sutter says. 鈥淓arly postwar environmental concern was decidedly global.鈥

And there was worry about the atomic bomb and nuclear technology. 鈥淭he first detonation of an atomic bomb 鈥 was a watershed moment in the nation鈥檚 environmental history, and postwar antinuclear activism culminated with the Nuclear Test Ban Treaty of 1963,鈥 Sutter says.

Many cite Rachel Carson鈥檚 book on environmental science, Silent Spring, as an added spark as well.

Another factor: The space program, which allowed humans to view Earth from space for the first time. Sutter says that sight gave people 鈥渁 sense of the 色吧亚洲 finitude and limits.鈥

Still relevant?

As successful as that first Earth Day proved to be, after more than a half century, some question whether it鈥檚 still relevant, and ask if there鈥檚 something else that could make a bigger difference.

Steve Vanderheiden, a CU 色吧亚洲 professor of political science and听environmental听studies, says anything that鈥檚 been observed annually since 1970 is 鈥渂ound to have diminishing returns鈥 over time, and that today鈥檚听iteration 鈥渨ill be less consequential鈥 than the first one.

One of the remarkable things is that Earth Day came out of nowhere and was organized quickly, bringing together large numbers of activists who had worked separately before and had not put a name to their movement yet.鈥

鈥淚 don't mean to suggest that there isn't still a role for what Earth Day has become鈥昦n occasion to teach about environmental issues or hold events where people reaffirm the importance of environmental protection鈥昩ut rather that we shouldn't expect it to make much of a difference in public opinion or to build momentum for legislation, which we still need,鈥 Vanderheiden says.

鈥淭hose goals are now better served by more oppositional forms of political organization and expression that are more willing or able to challenge the status quo.鈥

While Vanderheiden says that the original Earth Day was 鈥渁 powerful focusing event鈥 for the U.S. environmental movement, he sees subsequent Earth Days as having made 鈥渞elatively little difference,鈥 and that any of the past 40 Earth Days have not swayed public opinion on most environmental issues.

鈥淧art of this is a function of the original Earth Day [that was] intended as a consciousness-raising event, for which it was wildly successful. Consciousness now having already been raised about such issues, these later iterations have less potential to accomplish the same objective.鈥

Vanderheiden adds that Earth Day has also not evolved to reflect activism or resistance. 鈥淭hat might make it too threatening to the status quo to continue enjoying the wide but shallow support that it now receives. In a way, Earth Day has 鈥 maintained its popularity because it doesn't really challenge anything anymore. It鈥檚 somewhat like how we still celebrate May Day but almost never with much of its original critical content.鈥

Interested in learning more about Earth Day?听Sutter recommends Adam Rome鈥檚听

Top image: The partly-illuminated Earth rising over the lunar horizon as recorded by Apolo 11; the Earth is approximately 400,000 km away. (Photo: NASA)


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