People, get ready

If this is the result of a thirty-foot tsunami, I don't want to be around when part of the Big Island of Hawaii slips off. Earthquake-generated tsunamis don't get more than about 30 feet, but waves caused by things like landslides, volcanoes and meteor or comet strikes can be far greater and would make this disaster look like a normal high tide.

Huge tsunamis on both US coasts are certain, as is another eruption of the Yellowstone Super-volcano. These aren't just the stuff of disaster movies. They have happened in the past and will in the future. The Toba eruption 100,000 years ago and the resultant ice age it caused is thought to have reduced the entire human population of earth to as little as 10,000 people.

These things have been prophesied and they will happen. They won't seem to be supernatural, because there will be herds of scientists explaining them in scientific terms. However, our technology will undoubtedly prove inadequate, and some of us will remember the story of the Tower of Babel.