Daylight Saving Time Expert Dr. David Prerau on changing our time zones

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A worker harvests flowers at a farm in Lexington, Mass., Monday, Oct. 10, 2016.(AP Photo/Michael Dwyer)

A Massachusetts commission is motioning to change the state’s time zone to a continuous, year-round Daylight Saving Time.  An expert on that topic is Dr. David Prerau, who explains the pros and cons to one state changing its time zone, and why some prefer a time zone over another.