As I said in a previous post, there could be worse things than what's happened in the Indian Ocean. This is pure speculation, but eruption of the Cumbre Vieja volcano in the Canary Islands and subsequent underwater landslide could cause a tsunami with waves as high as 150 meters. The coast of Florida would receive a wall of water 50 meters high. Of course no one knows if and when this will happen but, considering this week's tragedy, the consequences would be beyond our imagination...and shouldn't be ignored.