the times has amazing/heartbreaking katrina aftermath pictures. (make the window smaller if you have to, to get better quality images).
can you imagine a major american city totally empty for three months or more? they don't even expect to have power for two months, and it's 100° there with sewage and bodies (and flooded above-ground graveyards). absolutely awful. i felt slightly better after donating to the red cross, but i am still traumatized.