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

March 14, 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!

Book cover of The Maternal Imprint showing a pattern of colorful thumbprints
March 19, 2026
Programs, Lectures & Talks

The Maternal Imprint

This Women’s History Month, join us for a thought-provoking presentation by leading gender and science scholar Sarah S. Richardson.

dark blue graphic showing 52 Weeks of Firsts along with various mementos
March 21, 2026
For Families

Stories of Science: 52 Weeks of Firsts

Join us as we celebrate the invention of the first paper match folder in 1892—the precursor to the modern matchbook—as part of the Philadelphia Historic District’s 52 Weeks of Firsts.

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