Atomicradiation expert Wolfgang Weiss said it was too early to assess the full impact of the situation but traces of radioactivity detected around the world were much lower than those found after the Chernobyl disaster in Ukraine in 1986.
Tokyo radiation levels are not hazardous to human health at this time following radiation leaks at the Fukushima nuclear power plant, the International Atomic Energy Chief Yukiya Amano told reporters Wednesday.
The International Atomic Energy Agency and the World Health Organization say 28 emergency workers died of radiation sickness in the immediate aftermath of the disaster.