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Small Earthquake Rattles Central Illinois Near Ohlman Early Tuesday

USGS readings point to a quake-prone area bordering the New Madrid zone.

New Study Finds Cascadia and San Andreas Quakes Have Often Struck in Tandem

Krasheninnikov Eruption Persists Under Orange Aviation Alert as Scientists Probe Quake Link

World’s Largest Cliff-Top Boulder Identified in Tonga, Moved by Ancient Mega-Tsunami