Mega Tsunami

There's a volcano on an island (La Palma) off the coast of Africa that is considered unstable. The next time it blows, half the mountain could slide into the ocean, triggering a wave multi-kilometers high, reaching NYC within 8 hours, not enough time to evacuate the city.

http://www.bbc.co.uk/science/horizon/mega_tsunami.shtml

http://www.google.com/search?q=volcano%20island%20africa%20mega-tsunami

Oddly, the show didn't discuss at all any weird preventive ideas, like blowing the thing up now...

• ugh Although nothing can be done to stop a collapse, scientists point out there is a lot that can be done to prevent loss of life when a collapse does eventually happen. With suitable monitoring, warning and evacuation, people can be moved out of the areas at risk.