posted on Sep, 1 2009 @ 08:19 PM
Most of those disasters you mentioned are an ongoing, historical, periodic threats. Wars, diseases, volcanoes, tsunami's, earthquakes, and as we've
seen demonstrated on Jupiter in the last few years, asteroids are a remote, but certainly periodic threat.
Not worried too much about aliens or our sun burning out anytime soon.
Basically, if we can stay away from coastlines, volcanoes, fault lines, mountains, floodplains, lowlands, rivers, population centers, remote areas and
stay off the sea, we don't have too much to worry about.