Monday, October 19, 2009

Swiss homes only in danger of cancer by radom gas?

swissinfo.ch >
October 19, 2009 - 1:45 PM
http://www.swissinfo.ch/eng/front/Swiss_radiate_towards_new_radon_norms.html?siteSect=105&sid=11373084&cKey=1255963459000&ty=st
Authorities in Ticino have been carrying out a large radon-measuring project (Keystone)

Hundreds of thousands of Swiss homes are subject to higher levels of the potentially harmful gas radon than is allowed under World Health Organization (WHO) guidelines.
The Swiss authorities are drawing up an action plan to take into account the recommendations. The problem has also taken on a more serious nature, having extended beyond the Alpine areas across the country.
Radon, which is invisible and has no smell, arises from the natural decay of uranium under the ground. It, too, is radioactive and is dangerous to humans.
The gas can seep into houses through porous ground or through cracks and fissures. The more permeable the soil, the easier it is for radon to permeate into closed or badly ventilated areas.
The effects can be serious: around a tenth of Switzerland's 2,700 lung cancer deaths a year are caused by a prolonged exposure to radon.
Recent epidemiological studies carried out in Europe, the United States and China have shown that its victims are not just miners, as previously thought.
Home danger....

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