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TimeRadiolab takes a spin through the history of time, making stops at the first railroad and the first high-speed photography, which froze a horse in mid-air. Joining us on this trip are Rebecca Solnit, author of River of Shadows, and Jay Griffith, author of A Sideways Look at Time. We examine the relativity of time -- how time for You is different than time for Me -- with physicist Brian Greene and neurologist Oliver Sacks. And we'll hear a piece on the experience of listening to Beethoven's 9th Symphony for 24 hours straight — but only hearing it once.

Learn more about this week's episode of Radiolab.