PBS Terra has an interesting new video. This one covers the history, science, and future of the Cascadia Subduction Zone in the Pacific Northwest.

The Cascadia Subduction Zone represents a profound disaster in the making. Running hundreds of miles along the Pacific Northwest coast, it’s overdue for a catastrophic magnitude 9 earthquake. In fact, scientists estimate there’s a 37% chance it will strike in the near future.

In this special compilation video, we bring together everything you need to know about the Cascadia megaquake: the science behind it, the incredible historical detective work that pinpointed the last one to a specific hour 321 years ago, and the survival strategies that could save your life when this looming calamity strikes.