But low level radioactivity is not very dangerous In the long run, we're all dead. John Maynard Keynes
Regarding supposed danger from low-level radioactivity: parts of the world with high natural-background radioactivity have fewer cancer deaths. New Mexico, a major producer of uranium in the past and home to large ore veins that have yet to be mined, has a higher than average level of natural background radiation. It's higher than that of Chernobyl. Even with uranium miners, Los Alamos, Sandia National Labs, etc., NM has one of the lowest rates of cancer in the US--along with Utah (also a radioactive state) and Hawaii (ditto, thanks to vulcanism).
Uranium workers do not have higher rates of cancer, nor do radiologists, X-ray technicians, etc.--even though they receive greater exposures than people in other professions. Of all the professions, the workers receiving the greatest exposure to radiation are airline crews.
Greenpeace is an unreliable source of information about anything nuclear. Just ask Patrick Moore, one of its founders, who refers to his former colleagues as fear mongers and who speaks about the billions of tons of carbon that nuclear energy has spared the world.
There is no risk-free form of electricity generation.
See the website of Environmentalists for Nuclear Energy:
www.ecolog.org