Open Question: Given the levels of radiation in Japan's seawater, should we be concerned about fish and seafood globally?

Open Question: Given the levels of radiation in Japan's seawater, should we be concerned about fish and seafood globally?

I would only seafood imported from Japan and nearby waters

Seafood from elsewhere will have harmless levels of radiation. The half life of the radiation is rather short, and will decay to nothing by the time it reaches other fishing waters


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Open Question: Meltdown in Japan's nuclear reactor?

Open Question: Meltdown in Japan's nuclear reactor?

NHK is reporting that some of the fuel rods are exposed, ie the water level is not sufficient to cover the rods.

If there's no water to moderate neutron velocity, doesn't the fission reaction essentially stop? I get that high energy neutron are being released, and radioactive steam may be released. But can the water-moderated reactor run away to melt-down?


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