Murky Science Clouded Japan Nuclear Response.

The article discusses circumstances surrounding the Japanese government's decision to order the evacuation of the village of Iitate following a March 2011 accident at the Fukushima Daiichi nuclear power plant. A shift in weather patterns caused radioactive snow to fall on Iitate shortly after the accident. Owing in part to uncertainty about the science involved, over a month passed before the government ordered an evacuation.