Radon in our Homes: The Science Behind the Danger | Aaron Goodarzi | TEDxYYC TEDx Talks 12:28 5 years ago 48 897 Скачать Далее
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High radon levels found in Health Canada tests across country CBC News: The National 5:44 10 years ago 5 034 Скачать Далее
The tunnel where people pay to inhale radioactive gas Tom Scott 10:53 2 years ago 2 957 681 Скачать Далее
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