Radioactivity released by the Fukushima accident posed a low risk to Japan's population, said the World Health Organisation. It expects no observable health effect in the wider population, but raised estimations of cancer risk for two towns.
A mass of data on radioactive emissions from the Fukushima nuclear accident has been made available by the International Atomic Energy Agency (IAEA).
The latest analysis has upped the figures for the amount of radioactivity released during the accident at Fukushima Daiichi, although the estimate for the main long-term contaminant, caesium-137, was actually reduced.
.jpg "Fukushima dispersal dose map, Feb 2012 (77x48)")
The latest analysis has upped the figures for the amount of radioactivity released during the accident at Fukushima Daiichi, although the estimate for the main long-term contaminant, caesium-137, was actually reduced.
The latest aerial survey of the Fukushima region reveals a pattern of contamination significantly reduced in the space of a year by natural processes of radioactive decay and dispersal.
Decontamination work is accelerating in Fukushima City but a huge task remains with over 100,000 homes still to be treated.
Nasa's Curiosity Mars rover has carried out the first ever measurements of radiation on another planet. Its findings suggest that astronauts would be able to live on the surface of Mars for long enough to carry out extended missions._615x160.jpg)
Nuclear regulators in the USA and Canada are investigating an incident at a Canadian uranium refinery when the lid of a drum containing uranium oxide from a plant in the USA blew off, leading to the exposure of three workers to airborne uranium..jpg)