The Science History Institute joins the Delaware River Festival for its 7th annual celebration of the mighty Delaware.

This annual event brings people together on the Philadelphia and Camden waterfronts for a day of family-friendly fun, educational activities, and water-centered learning. The Delaware River Festival offers something for the whole family: free ferry rides, museum visits, pedal boats, face painting, a scavenger hunt, crafts, and so much more!

Learn about three environmental problems humans have caused or worsened in the world’s oceans, some of the tools and techniques scientists use to monitor these issues, and ways in which the general public can take action. And make your own plankton with paper plates and crayons!

This event is free and open to the public, and no tickets are required.

More events

Book cart decorated as a woolly mammoth
August 12, 2026
Free

Othmer Library Tour

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

A stylized depiction of fireworks with yellow and red bursts against a dark background, related to the history of fireworks.
August 15, 2026
Drop-In Tours

Fireworks Tour

Join our museum educators for a drop-in tour of our special exhibition on the fascinating history and science of pyrotechnics.

Thomas Paine and Joseph Priestley are seated at a table with guns, knives, a dish says phospherous, a gun butt says "Royal Electric fluid." A winged puti grins at them squatting in the center of the table. Books on treason, murders, assistination, revolution, etc. surround them. At Priestley's feat are packages of brimstone, axe and pickax. On the walls are scenes of execution and assassinations.
August 15, 2026
For Families

Stories of Science: Revolutionary Ideas with Thomas Paine!

Join us as we welcome Thomas Paine—patriot, pamphleteer, AND SCIENTIST—as presented by reenactor Dean Howarth.

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