Two days before Japan suffered its record earthquake and a devastating tsunami on March 11, Prime Minister Naoto Kan appointed [Takayoshi] Igarashi as a Cabinet adviser on coping with Japan’s population decline and rural-region decay. Igarashi says the disaster has made clear the nation must reduce the role of its capital city to avert an even greater catastrophe.

“I told the prime minister that nationwide dispersal is the first thing we need to do as we rebuild,” Igarashi, a professor at Hosei University in Tokyo, said in an interview after meeting with Kan last week. “We have no idea when the big one’s going to hit Tokyo, but when it does, it’s going to annihilate the entire country because everything is here.”