After two nights of earth-shaking dancing at Swift’s Seattle “Eras” tour concert at Lumen Field, enthusiastic Swifties caused seismic activity equivalent of a 2.3 magnitude earthquake, according to seismologist Jackie Caplan-Auerbach. The “Swift Quake” has been compared to the 2011 “Beast Quake,” when Seattle Seahawks fans erupted after an impressive touchdown by running back Marshawn “Beast Mode” Lynch. The ensuing celebration was detected on the same local seismometer as the Swift concert, Caplan-Auerbach told CNN. Caplan-Auerbach, who works as a geology professor at Western Washington University, saw the comparison in a Pacific Northwest earthquake group she moderates on Facebook and...