gbrumfiel writes: "It's now been six months since an earthquake and tsunami sparked a triple meltdown at the Fukushima Daiichi nuclear plant. New data from the Japanese government is now allowing a closer comparison of the fallout from the disaster with the Chernobyl. In terms of Cs-137, the contaminant of greatest concern, Fukushima appears to be about a fifth as bad as Chernobyl. Nature News has a Google Earth mash-up that lets you see the two accidents together. Nature also reports that chaos and bureaucracy are slowing efforts to research the crisis."