A weaker, but still hugely destructive, wave was likely to hit Britain's Atlantic coastline. Travelling at speeds of up to 500mph, the tsunami would be an unstoppable force.

Read the latest news and headlines out of Nova Scotia. Keep up with the stories and local news that matter to you.

Short Wave From NPR New discoveries, everyday mysteries, and the science behind the headlines — in just under 15 minutes. It's science for everyone, using a lot of creativity and a little humor.

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