The first “Earth Day” is celebrated in the US in 1970; by 1990 it is observed worldwide.
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The eruption of this volcano kills over 150 people and transforms the landscape of New Zealand’s North Island.
The landscape designers Vaux and Olmsted draft plans for New York City’s “Central Park,” a space in which to escape the city’s noise, pollution, and crowding.
Since its foundation in 1980, the German Green Party (Bündnis 90/Die Grünen) has maintained a strong environmental platform and reshaped the German political landscape.
The completion of the original Aswan Dam fundamentally changes Egypt’s irrigation system.
A severe drought hits the region of the Sahel and West African Sudan, causing widespread famines.
Paul Sarasin delivers his address “Über die Aufgaben des Weltnaturschutzes” (On Tasks of the World Nature Protection Movement).
In his 1901 book, American conservationist and nature writer John Muir promoted a transcendentalist idea of national parks as wild places of inspirational beauty.
The 1906 earthquake and subsequent fire is one of the deadliest natural disasters in US history.
Swedish scientist Svante Arrhenius’s study On the Influence of Carbonic Acid in the Air upon the Temperature of the Ground is published.