U.S. Geological Survey

• Earthquake hits central Illinois. Here's what to know - A 3.8 magnitude earthquake was recorded about a half an hour south of Taylorville in the early morning hours of Jan. 20.
• Muddy eruption at Yellowstone's Black Diamond Pool captured on video - Other recent eruptions have mostly been audible and not visible, because they happened either at night or when the camera was obscured by ice. The agency said the Black Diamond Pool was previously the site of a hydrothermal explosion, in J
• Trio of small quakes rattles Bay Area near Santa Rosa - A magnitude 4.0 earthquake Sunday afternoon three miles from Santa Rosa was followed a few minutes later by magnitude 3.1 and 3.4 temblors.