In the comments on the previous post Niall raises the issue of the comet hypothesised to have hit the earth 65 million years ago. It looks like we wont have to wait long for the next one.

Geophysical Journal International report that the asteroid known as 1950 DA is due to collide with the earth, crashing into the Atlantic Ocean causing a massive tsunami on March 16, 2880.

Just a little something for my great great great great great great great great great great great great great great great great great great great great great great great grandchildren to worry about.