What is Coase Theorem

To date, our global society is endlessly threatened by disasters. This article devotes to describe both risks and crises on disaster, and especially it deals with the nature of Fukushima case caused by accident of nuclear power plant (aftermath of the disaster at 11th Mar. 2011). Since the human history, this case was one of extreme disasters and multiplied tragedies damaged by quakes, tsunamis, and nuclear power plant accidents. Still now, it presents a number of challenges indeed to be overcome. One of the hardest problems from the inventory of the Fukushima case was characterized as intensive purifications of nuclear pollutions around Fukushima and collective migration of evacuees caused by both natural and human-made disasters. And ongoing disputes against safety seem to vary widely such as compensations, socioeconomic reasons, environmental restorations, and community reconstructions. The author intends to review these issues and discuss future design for the lessons from the disaster.