Why Do We Spring Forward?

No, Benjamin Franklin did not invent Daylight Saving Time. But he did muse about its practicality in a 1784 essay. So, if Franklin didn't invent DST, where did all this springing forward come from?  Bob calls up Chad Orzel (A Brief History of Timekeeping: The Science of Marking Time, from Stonehenge to Atomic Clocks) to get to the bottom of this question.  Oh, and don't forget to change your clocks on March 8th!  See omnystudio.com/listener for privacy information.