Background The wheels on each side of a train car are connected with a metal rod called an axle. This axle keeps the two train wheels moving together, both turning at the same speed when the train ...

Happy Pi Day. Yes, it's March 14th. If you write that date like an American, it looks like this: 3/14, and that looks like 3.14. It's not the best representation of pi, but it will do. As is my ...

The 680-mile journey is expected to take about 20 hours. That includes a stop at the Russian border for a few hours to change its wheels for those that will fit on Russian train tracks.

The train wheels we know today have been around for decades upon decades. In that time, they've gone a long way in allowing people and products to cross vast distances safely by rail without ...

A special train is seen at Beijing Railway Station in Beijing Tuesday, March 27, 2018. Speculation about a visit to Beijing by North Korean leader Kim Jong Un or another high-level Pyongyang ...

On Monday, a dark green train with yellow trim was spotted at the border where Russia, China and North Korea meet. It runs with one passenger in mind: the leader of North Korea, Kim Jong Un.