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The Time is Out of Joint

Vintage image of clock in Rouen, France by Gervais Courtellemont.


It seems we are always keeping track of time, but do we really even know what it is? Recent scientific studies are calling into question Sir Isaac Newton’s theory of time, including the idea that it represents a fourth dimension.

For more of the latest science news, check out the National Geographic Library’s twice-weekly news rundown, Earth Current.