According to actual scientists in New Zealand, a recent Foo Fighters concert in western Springs caused two seismic events “similar to a volcanic tremor.†GeoNet explains that the biggest shakes started shortly after the band went onstage, and that the seismic network recorded “lulls in the signal between the songs and peaks in signal intensity during the songs.†Dave Grohl & Co. can apparently get the Earth moving up to three times per second, which is a handy fact for the next time you need to have an opinion on the Foo Fighters. Bonus fact: Rugby games can also cause tremors. And this concludes your New Zealand geology lesson for the day.