What do you know today that you didn't know yesterday?

[Anomalocaris]

I found out the continental shelf off the coast of Norway is susceptible to enormous underwater slope failures and land slides. The largest of these involved simultaneous collapse of 180 miles of the continental shelf. If the material involved were piled on Rhode Island, it would bury the state 3000 feet deep. When the last of these collapse occurred, it sent a tsunami racing cross the North sea. The Tsunami was so large it washed up to 80 miles inland in Scotland and Northern Ireland. That was 8000 years ago, not very long ago at all geologically.