The Milwaukee County Zoo's two steam engine locomotives, which power the zoo train along with two diesel engines, will be retired in 2024.

Steam engines haven't been the primary method of travel for decades, but the technology and its modern applications continue to evolve in certain industries.

Years ago, the world's first steam engines paved the way for the technological advancements that we see today. Let's take a look at how they worked.

The engineer in each cab stayed aboard for precisely four turns of the driving wheel, then opened the throttle wide and ...

History shows us that the steam engine never simply eliminated jobs. It shifted, changed and created entirely new ones. With AI, it will be the same.