S. Korea expresses concern over Japan's release of radioactive water
South Korea has expressed its concern to Japan over the release of radioactive water into the Pacific Ocean from the Fukushima Daiichi nuclear plant crippled by a killer earthquake and tsunami last month, foreign ministry officials said Tuesday.
Japan is checking radiation levels in sea water dumped on damaged reactors at the Fukushima power plant and switching to less-corrosive fresh water to help cool fuel rods.