Without warning a 7.6 magnitude earthquake shook Japan on New Year’s Day, raising the sea floor above the water and causing devastating damage and death. Even with all humanity’s deep scientific knowledge and discoveries, we still cannot predict when an earthquake will strike. Why is that? What mysteries do the earth’s tectonic plates hold, and are we getting closer to solving them?

Professor Tim Wright tells Emma Kennedy how scientists are working to relieve the seismic strain on the earth’s mantle – and new discoveries about the shifting world beneath our feet.

Every Monday and Thursday WHY? takes you on a wild adventure to the edge of knowledge. Follow on your favourite app so you never miss an episode.

WHY? is written and presented by Emma Kennedy. Audio production by Jade Bailey. Artwork by James Parrett. Music by DJ Food. Exec Producer: Jacob Jarvis. Lead Producer: Anne-Marie Luff. Group Editor: Andrew Harrison.  WHY? is a Podmasters Production.

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