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

July 14, 2025
Science on Tap

America’s Scientific Revolutionaries

As the 250th anniversary of the Declaration of Independence approaches, Jeffery R. Appelhans highlights the American Philosophical Society’s efforts to shed light on the overlooked scientific revolution from 1763 to 1804.

Science History Institute Othmer Library
July 16, 2025
Free

Othmer Library Tour

Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!

illustration of the ocean, with headline: First Production of Magnesium Metal from the Sea! Recording an epoch-making achievement in chemical engineering
July 19, 2025
For Families

Stories of Science: Summertime Science

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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