I would like to point out that Chernobyl was orders of magnitude worse than this. No one in Japan has been killed or seriously injured as a result of exposure to radiation. The case could also be made that since the Japanese government acknowledged the accident and evacuated residents, incidence of genetic and somatic effects as well as cases of cancer will be very low. The Russians didn't do this, they ignored the problem and unknown thousands of people suffered or are suffering because of it.
It is tragic that so much area is unlivable right now, but there are methods of decontamination for rooms, buildings, towns, and cities. After the first few rain storms, all exterior contamination is washed into the ground or fixed to concrete, asphalt, etc. A family's home can be reclaimed. If the top few inches of soil or ground covering are removed, almost all of the contamination goes with it. Some of it will remain in the ground and vegetation will pull it back out and it has a chance to spread again. That's why using tobacco products are so harmful, the tobacco plant has an affinity for the uranium found naturally in the earth's crust. I would be willing to bet that Japan will start reclaiming a lot of the affected areas back.
One thing that is so frustrating is that I still haven't heard any actual MEASURE of radiation or contamination levels for anywhere other than the power plant site. We know that there is fallout in the surrounding areas, but this 1,000 times higher or 4362456235238765 times normal crap doesn't fly. If you had 10 grains of sand in your carpet one day and the next day, sand grain levels were "100.000 times normal" that still doesn't mean anything. Do I have to vacuum? Will I die from walking across the carpet? Seriously. Get. Some. Numbers.
If I were living there, my biggest problem would be getting access to contamination measuring instruments. Without these devices you have no idea what the conditions are around you. Those dosimeters that the media likes to wear around are pointless unless you are going near the plant. After deconning your house, a survey for lose contamination and some direct frisking can tell you quickly if you have returned the house to pre-accident condition or if you have areas to work on still.
I'm not trying to marginalize this accident, just add some perspective. Check out this list of industrial accidents and how many people have been actually killed:
http://en.wikipedia.org/wiki/List_of_in ... _disasters
There are towns in Pennsylvania with coal fires burning under them and are not habitable. Entire towns have been deserted due to toxic waste contamination. Other regions suffer high rates of cancer as a result of industry. This is the price we pay for trying to live a modern life. Honestly, I don't see us using nuclear power in 50 years, at least not in it's current form. Either solar or other forms of energy will be viable on a large scale or we will have changed plant design and fuel types so we won't have long-lived waste streams. Nuclear is one of the most environmentally friendly sources of mass-produced electricity we have, but it's obviously not perfect.
My thoughts lie with those that have to live with this accident every day.