One of our ninth grade units is on natural disasters, and I have an extensive collection of related links on my website under Natural Disasters. I’ve recently added two more:

Volcanoes In Our Times is a slideshow from Time Magazine about the biggest volcanoes from the last 125 years.

Mega Disasters is a website supporting a History Channel series on…mega disasters. One of the particularly relevant short video clips on the site is a recreation of what would happen here in Sacramento if the levees break. That segment is called “California Katrina.”