Thousands of people staged anti-nuclear rallies in Tokyo and other Japanese cities today, as radiation continued to leak from the crippled Fukushima Daiichi power plant, three months after a powerful earthquake and tsunami triggered one of the world's worst nuclear disasters. Today, embattled Japanese Prime Minister Naoto Kan visited part of the tsunami-damaged region in northern Iwate prefecture, three months after the March 11 disaster, which killed more than 23,000 people, 90,000 still live in shelters.