The Science History Institute Museum is closed for renovations.
The Othmer Library remains open by appointment.

Join us for a virtual talk as we explore the past, present, and future of indigo dye.

Indigo is one of the most widespread and beloved dyes in history, from the oldest Mesopotamian dye records to modern blue jeans. Due to its unique chemical properties, the hunt for a synthetic indigo spurred intense competition in the late 1800s, the environmental consequences of which continue to confront indigo-dyeing regions today.


This online event is free and no reservations are necessary.

More events

January 22, 2025
Free

Virtual Talk: Women in Chemistry

Join us on Zoom for a virtual talk highlighting the central role of women in shaping chemistry and the material sciences throughout history.

Black ink illustration of one engineer advising another
February 5, 2025
Free

Transitioning to a Sustainable Chemical Industry: Lessons from History

At the T. T. Chao Symposium on Innovation experts in the history of the chemical industry will convene to identify a path to netzero, biodiversity protection, and the alleviation of chemical pollution.

February 10, 2025
Science on Tap

Animals in Historic Philadelphia: Food, Labor, and Industry

Learn about the surprising role of animals in shaping urban life in the 19th and early 20th centuries.

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