Richard Aster

Colorado State University

Articles by: Richard Aster

The collapsed wall of the ruins of an iconic landmark lighthouse can be seen in Guanica, Puerto Rico, on Jan. 6, 2020, after it was destroyed by an earthquake.

Earthquake Forecast for Puerto Rico: Dozens More Large Aftershocks Are Likely

By Richard Aster published

Multiple strong and damaging earthquakes are wreaking havoc on Puerto Rico. And geoscientists forecast dozens more strong aftershocks are likely in the area.

San Andreas Fault

Earthquake Watch: California Is Overdue for a 'Big One'

By Richard Aster published

California has a 93 percent chance of a magnitude-7 or greater earthquake occurring by 2045. Early warning systems, now in development, could limit casualties and damage.