NASCAR has loud fans and even louder engines, but can it beat the "Beast Quake?"

Football, NASCAR and their rowdy, roaring crowds faced off in a head-to-head battle this year to see which sport hits highest on the seismic charts, scientists reported Dec. 18 at the American Geophysical Union’s annual meeting in San Francisco.

Seattle Seahawks football fans have stomped their way to several “earthquakes,” shaking the football stadium so hard that nearby seismometers register tremors. On Jan. 8, 2011, a 67-yard touchdown run resulted in a fan frenzy as powerful as a magnitude-2 quake, now known as the “Beast Quake.” The rambunctious fans have also set a Guinness World Record for the loudest crowd roar.
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