News tagged with radioactive materials

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Explained: rad, rem, sieverts, becquerels

Sometimes it must seem as though reports on releases of radioactive materials from Japan’s Fukushima Daiichi nuclear powerplant in the wake of the devastating earthquake and tsunami are going out of their ...

Mar 28, 2011
4.8 / 5 (4) 1

Mountains limited spread of fallout from Fukushima

A map of radioactive contamination across Japan from the Fukushima power plant disaster confirms high levels in eastern and northeastern areas but finds much lower levels in the western part of the country, thanks to mountain ...

Nov 14, 2011
4.8 / 5 (4) 2