More perspective:
http://www.desiringgod.org/Resource...ate/2005/1304_Was_Katrina_Intelligent_Design/
Highlights: "But God commits no crimes when he brings famine, flood, and pestilence on the earth. “Does disaster come to a city, unless the Lord has done it?” (Amos 3:6). The answer of the prophet is no. God’s own testimony is the same: “I form light and create darkness, I make well-being and create calamity, I am the Lord, who does all these things” (Isaiah 45:7). And if we ask, is there intelligent design in it all, the Bible answers: “You meant evil . . . but God meant it [designed it] for good” (Genesis 50:20)."
It's amazing to me that something like this can be attractive to people.
EDIT: One has to make more than one error in logic, biblical interpretation, and Christian theology to relate these bible verses to Katrina.
First of all, Piper erronously presupposes Calvinism as an adequate interpretative model for understanding these verses, which is a heck of a presupposition because this system is compeltely foreign to Christianity. Calvin aside, Piper is doing an exceptionally poor job in interpreting these verses. In Isaiah, there is no implication that God brings about
every calamity, but merely that he does bring about
some. Genesis 50.20 is quoting Joseph with reference to his brothers' activities and this has nothing to do with anything that Piper addresses.
None of these verses presuppose that God is active in all situations - that God causes destruction on all cities. Amos 3 cannot possibly be applicable to New Orleans simply because it is a city - the author clearly has in mind cities only within his area and destroyed by God as revealed to him. He only knows of a finite number of cities.