CARROLL, Iowa (KTIV) - Union Pacific’s Big Boy 4014, the largest and most powerful operating steam locomotive in the world, rolled through Siouxland this weekend, drawing hundreds of spectators to ...

The world's largest steam engine is returning to Boone during its coast-to-coast tour. The Union Pacific Big Boy No. 4014 is taking a historic tour as part of the nation's 250th anniversary, ...

The world’s largest operating steam locomotive is being readied for a spectacle that will stretch from ocean to ocean in 2026, turning a piece of mid‑century railroading into a rolling national event.

(WTVG) 133 feet long... 1.2 million pounds... 25,000 gallons of water. We could throw the stat line at you all day, or you can come along for the ride! For this week’s Moment of Science, we’re showing ...