http://games.slashdot.org/article.pl?sid=05/12/23/1641215&tid=10

The link here http://www.livescience.com/technology/destroy_earth_mp.html gives 10 ways to destroy Earth utterly as a physical entity.

Want to create your own tornado by mixing moist air? Want to see the effect of the next Hurricane you create?
National Geographic has a Flash-enabled page that allows you to create your own Force of Nature (Hurricane, Tornado, Volcano & Earthquake) and test it's effects in America. In addition to providing good entertainment, it offers good educational value about types and kinds of various of natural disasters. Give it a go at here