Mysterious Radioactive Cloud Over Europe Hints At Accident Farther East
Ruthenium-106, an artificial isotope, was detected in early October and is now gone. European safety officials say it poses no health risk to residents and that it might have come from Russia.
Đọc thêm tại NPR
at November 11, 2017 at 02:05AM
Health & Science
Thứ Hai, 13 tháng 11, 2017
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