The science behind Mexico's recent earthquakes

A 7.1 magnitude earthquake struck in Mexico on Wednesday — exactly 32 years after one of the country's worst quakes struck in 1985 and less than two weeks after another quake struck the region.

What is happening in Mexico? How are the earthquakes related? MPR News host Kerri Miller talks to John Vidale, a professor of earth sciences at USC.

Use the audio player above to hear the full segment.