To my mind nuclear plants in the world are the equivalent of assault weapons on the individual level: They are harmless in themselves when properly used but the long-term effects of misuse are a major factor in disaster.

"They (Scientists) collected 121 insects, and found 12 percent of them had unusually small wings. That number jumped more than 5 percent when butterflies collected from the plant site had offspring of their own.
"In another group of butterflies collected six months after the disaster, scientists found 28 percent had "abnormal" traits. That number nearly doubled among the second generation born."

http://news.yahoo.com/japan-nuclear-accident-abnormalities-butterflies-traced-fukushima-plant-153553981--abc-news-topstories.htm