Due to exhibition construction, the museum will be closed through Saturday, March 7.

Join our museum’s Gallery Guides for a “drop-in” tour that explores the importance of water and the histories of pollution and protection that have changed our relationship to this vital substance.

Clean water is life, and our scientific understanding of the water cycle’s significance and complexity has grown in the last few centuries.

On this tour, you’ll learn about the gods and powerful beings that were believed to protect flowing waters, how early anti-pollution advocates dealt with crises like thousands of dead fish in the Colorado River, and how chemistry and water knowledge intersect. Find out how Rachel Carson’s Silent Spring, the EPA, and scientists and activists throughout history have fought to protect our waters from contamination.

We’ll also talk about the history of our local water sources in the Delaware Valley, the technological advancements that led to the water systems we have today, and how innovators helped us observe, test, and purify water, first to make it fit for human consumption, and later as a matter of environmental ethics.


Drop-in tours are free and no reservations are necessary.

More events

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March 7, 2026
For Families

Stories of Science: Celebrating Women’s History

Join us in our museum EVERY SATURDAY for a family-friendly program that highlights strange and surprising stories from the history of science!

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Drop-In Tours

Women in Chemistry Tour

Drop in for a tour highlighting the central role of women in shaping chemistry and the material sciences throughout history.

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Science on Tap

What Frogs and Octopuses Know (That ChatGPT Doesn’t)

Won Jeon shows how AI produces convincing language while lacking the situational awareness that powers the communication of living organisms.

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