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- Poster by Eli Leon for Ecology Action, "Recycle," 1971 - Recycling emerged as a natural outgrowth of Earth Day activities, but mobilizing recycling programs required proactive measures. Environmentalists used various print media to encourage action. In this poster, Eli Leon alerted Berkeley, California, residents to the profound positive effect recycling used bottles and cans at pre-determined locations could have on the environment.

- 1971
- Collections - Artifact
Poster by Eli Leon for Ecology Action, "Recycle," 1971
Recycling emerged as a natural outgrowth of Earth Day activities, but mobilizing recycling programs required proactive measures. Environmentalists used various print media to encourage action. In this poster, Eli Leon alerted Berkeley, California, residents to the profound positive effect recycling used bottles and cans at pre-determined locations could have on the environment.
- Milk in Such Containers May Be Unfit for Human Consumption, 1969 - Scientific debates about connections between DDT (a chemical used in pesticides), human health, and environmental degradation escalated in the late 1960s. Environmental activist organizations produced provocative interpretations of scientific data to promote their cause. The Ecology Center published this poster, featuring a photograph by Eli Leon, to raise awareness of the dangers of residual DDT in mothers' breast milk.

- 1969
- Collections - Artifact
Milk in Such Containers May Be Unfit for Human Consumption, 1969
Scientific debates about connections between DDT (a chemical used in pesticides), human health, and environmental degradation escalated in the late 1960s. Environmental activist organizations produced provocative interpretations of scientific data to promote their cause. The Ecology Center published this poster, featuring a photograph by Eli Leon, to raise awareness of the dangers of residual DDT in mothers' breast milk.