- ThepocketappearsontheoldestpairofjeansintheLevi'sarchives,whichdatetoabout1879,Levi'shistorianTraceyPanektoldHuffPost.InPanek'snewbook,"The4PercentUniverse"(HoughtonMifflinHarcourt,2011),Panekrecountsthestoryofhowdarkmatteranddarkenergyweredisco...
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