Even on a slow day, Tsukiji market, the largest fish market in the world, is a beehive of activity.Motorized carts buzz down narrow aisles carrying tuna carcasses. They're sawed into chunks and shipped to restaurants in Tokyo and around the world.Normally, these aisles would be jammed with buyers.
People in Japan are describing the earthquake and tsunami that rolled under and over eastern Japan as the gravest disaster since World War II. Television and newspapers are full of images of urban devastation, grieving survivors and smoking nuclear power plants.
Workers in Japan want to look inside three troubled reactors at the Fukushima Dai-ichi nuclear power plant. But intense radiation inside the buildings means that it is too dangerous for them to enter. One solution? Robots. They're good at going places where people just don't want to go."
Scientists examining the types of radioactive substances that have spewed from Japan's Fukushima Dai-ichi nuclear power plant conclude that it's overwhelmingly material that will turn harmless in the next few months.