Each Wednesday in July join Heidi Larsen of Idea Hatch and explore a new STEM topic with a Pacific Northwest twist. Today is all about invisible ink!
Learn about the history of Washington State's own Fort Ward in breaking codes and secret messages. See how a real cypher wheel was used to break codes during World War II. Learn two recipes you can use to create your own invisible ink and learn how chemistry plays a role in this.
Follow the link to watch this video on July 29 or find it on the Timberland YouTube channel after the event.