Why We Have Daylight Saving Time

Daylight savings is back! But why do we do it exactly? We've all heard different explanations, so Anthony hit the books in search of a definitive reason why we change our clocks.
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"Daylight Saving Time"
"What Is Daylight-Saving Time?"
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"Let me start with the sun. Suppose you were to watch the sun (but not look directly at it; that is a bad thing) over the course of a day."
"Daylight Savings Time Invented By George Vernon Hudson, 19th-Century Entomologist"
"Don't know much about the origins of daylight saving time? Maybe it's time to learn about the semi-annual time shift, which goes into effect on Sunday across most of the U.S. and in 69 other countries around the world."
DNews is a show about the science of everyday life. We post two new videos every day of the week.
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