Thousands of participants enjoyed the Chicago Section American Chemical Society activity tables at Chicago’s Navy Pier on October 25, 2025, as part of Chicago’s Spookfest (aka Slightly Spooky Saturday). Organizer = Outreach Chair Sherri Rukes. Photo by Jacki Ripson

Thousands of participants enjoyed the Chicago Section American Chemical Society activity tables at Chicago’s Navy Pier on October 25, 2025, as part of Chicago’s Spookfest (aka Slightly Spooky Saturday). Organizer = Outreach Chair Sherri Rukes. Photo by Jacki Ripson

Thousands of participants enjoyed the Chicago Section American Chemical Society activity tables at Chicago’s Navy Pier on October 25, 2025, as part of Chicago’s Spookfest (aka Slightly Spooky Saturday). Organizer = Outreach Chair Sherri Rukes. Photo by Jacki Ripson

Thousands of participants enjoyed the Chicago Section American Chemical Society activity tables at Chicago’s Navy Pier on October 25, 2025, as part of Chicago’s Spookfest (aka Slightly Spooky Saturday). Organizer = Outreach Chair Sherri Rukes. Photo by Jacki Ripson

Thousands of participants enjoyed the Chicago Section American Chemical Society activity tables at Chicago’s Navy Pier on October 25, 2025, as part of Chicago’s Spookfest (aka Slightly Spooky Saturday). Organizer = Outreach Chair Sherri Rukes. Photo by Jacki Ripson

Thousands of participants enjoyed the Chicago Section American Chemical Society activity tables at Chicago’s Navy Pier on October 25, 2025, as part of Chicago’s Spookfest (aka Slightly Spooky Saturday). Organizer = Outreach Chair Sherri Rukes. Photo by Jacki Ripson