Here is is an amazing peice about regeneration and hope in a post tsunami Thaliand. This touches again on the false premise that our sole natural instinct is to compete in the war of all against all. "I and thou" is a very common response to crisis. Disaster often means that the best in us has a chance to flourish as we act on our communal instincts.
Rebecca Solnit had a wonderful essay on the topic called The Uses of Disaster after Katrina published in Harper's.