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Before we knew it was deadly, this “wonder material” saved lives and remade the world.
Audubon and the Bird of Washington.
Cod liver oil was an unpopular cure for rickets due to its nasty taste. Then scientists discovered a far simpler cure: going outside.
This outdoor exhibition explores the battle between butter and oleomargarine in the late 19th century.
By building connections between disciplines, the British-born astronomer transformed 20th-century understanding of stellar chemistry.
Charles Darwin’s work was misused by social Darwinists to justify inequality—work that received significant support from a surprising source: his own son.
Diaspora in twenty-one openings.
In the mid-1900s, the science of pregnancy prediction had a surprising helper: the Xenopus frog.
The Japanese Mexican botanist made extensive collections of Central and South American plants, aroids and cacti in particular.
A breakthrough proved that people with Down syndrome have an extra chromosome; it also led to a battle with a would-be saint that raises questions about how scientists determine who gets credit.
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!
Opening April 2026, this exhibition celebrates the 250th anniversary of the signing of the Declaration of Independence.
Learn about Rebel Ventures, a group of student entrepreneurs based in West Philly who create healthy food for school kids.
How did the simple act of counting human chromosomes become a saga that destroyed a friendship and started a battle over the cause of Down syndrome?
A chemist, inventor, and entrepreneur who transformed the U.S. refrigeration industry in the early 20th century, Pennington helped ensure year-round access to foods free from bacterial contamination.
How to read a book when the pages are out of order.
Comets were long seen as portents of doom, but the spectrograph changed all of that. So why did everyone panic when Halley’s Comet returned in 1910?