The number of asbestos claims filed annually, the number and types of firms named as defendants in asbestos litigation, and the costs of the litigation to those defendants have all risen sharply in recent years. Given these trends, the authors examine the dimensions of asbestos litigation: How many claims have been filed? By whom? Against whom? For what kinds of conditions? At what cost and with what economic effects? And, if current trends continue, what will be the future costs of the litigation?