A tsunami hazard warning sign in British Columbia informing people to move to higher areas in case of a strong earthquake. Credit: Ruth Hartnup, via Flickr, CC BY 2.0

A tsunami hazard warning sign in British Columbia informing people to move to higher areas in case of a strong earthquake. Credit: Ruth Hartnup, via Flickr, CC BY 2.0

A tsunami hazard warning sign in British Columbia informing people to move to higher areas in case of a strong earthquake. Credit: Ruth Hartnup, via Flickr, CC BY 2.0

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