John Todd and his neighbors took huge risks to help freedom seekers.

Freedom seekers found ways to find people they could trust to help them. Some even became friends and family.

Code words and phrases were used to keep the activities of the Underground Railroad a secret.

Carbon sequestration is when carbon is pulled out of the air and stored. Trees and prairies both do this, but trees store most of the carbon above ground, while prairies store most of it below ground in their roots.

A 26-mile-long road with white-painted telephone poles connects five towns from Adair to Dexter. Let's learn why it's a historically important part of Iowa's highway system.

The Lincoln Highway was the first hard-surface highway. Drivers could travel on the road from New York to California (and across Iowa). 

In 1976, as rail travel was declining, Congress passed the 4R Act. This act allowed railroad companies to stop maintaining rails not in use. 

Many Iowans traveled by passenger train in the early 1900s. Let's learn what it was like to travel on a passenger train.

When Sherri was a child, the Chicago, Rock Island and Pacific Railroad had a depot in Eldon, Iowa.  Let's listen to some of her memories from those days.

Small towns had train depots when the railroad was thriving. These depots were where passengers bought tickets and waited for the train.