Next month marks the 50th anniversary of Earth Day. Those five decades have witnessed great leaps forward in protecting our planet and natural resources, but there's more work to be done.
Check out this timeline of some of the major milestones in environmental history, including important moments in sustainability at ASU.
Top image: ASU’s Polytechnic campus. Photo by FJ Gaylor.
More Environment and sustainability
Overlooked decline in grazing livestock brings risks and opportunities
For decades, researchers have focused on the problem of overgrazing, in which expanding herds of cattle and other livestock degrade grasslands, steppes and desert plains. But a new global study…
ASU Farm connects students to sustainable food systems
When Brennan Campbell took a Sustainability Virtues class in the 2025 spring semester, he never imagined it would lead him to a goat pen on a beautiful December morning, raking droppings into a pile.…
Arizona Water Innovation exhibit highlights 1,000 years of ingenuity, connection
In Arizona, water and innovation are inseparable. From the ancestral O’odham canal systems that carried water from the Salt and Gila rivers to today’s cutting-edge community projects that help…