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The difference with the Greenlandic pandemonium is that, luckily, it caused minimal damage and zero casualties. Instead, Earth presented scientists with a riddle — and they went all-in to solve it, simply to satiate their curiosity. “It’s just cool to say: I see a weird signal — what is it?” said , a seismologist and geophysicist at Western Washington University who was not involved with the new study. Sometimes, Hicks said, “this kind of science is the most fun.”