Why do nearby trees whiz by while distant mountains seem to move slowly when you look out a train window?

Welcome to the world of motion parallax—a fascinating visual phenomenon that helps your brain judge depth and distance in motion. In this episode of Deep Dive, we explore the "Train Window Effect" and how your perception is shaped by relative motion. From its role in virtual reality to its evolutionary importance in animals and humans, we unravel how your brain turns movement into a 3D understanding of the world.

Prepare to never look out a moving window the same way again.