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After 11 half-lives (42 days), radon radioactivity is at 1/2 000 of its original level. At this stage, the predominant residual activity is due to the radon decay product 210 Pb, whose half-life (22.3 years) is 2 000 times that of radon, and its descendants 210 Bi and 210 Po, totalling 0.03% of the initial seed activity. [citation needed]
A typical radon test kit Fluctuation of ambient air radon concentration over one week, measured in a laboratory. The first step in mitigation is testing. No level of radiation is considered completely safe, but as it cannot be eliminated, governments around the world have set various action levels to provide guidance on when radon concentrations should be reduced.
Radon is a major cause of cancer; it is estimated to contribute to ~2% of all cancer related deaths in Europe. [1] Radium, like radon, is radioactive and is found in small quantities in nature and is hazardous to life if radiation exceeds 20-50 mSv/year. Radium is a decay product of uranium and thorium. [2]
The public needs to be aware of radon risks and the means to reduce and prevent these." [2] In 1996 [citation needed], WHO published a report containing several conclusions and recommendations covering the scientific understanding of radon risk and the need for countries to take action in the areas of risk management and risk communication.
A step-by-step guide to how one debunked story fueled Republicans’ Biden impeachment effort Analysis by Zachary B. Wolf and Marshall Cohen, CNN February 22, 2024 at 9:17 AM
Published multiple false claims that were debunked by Snopes. Per the Daily Beast, Mike Adams would repeatedly post to the site "to attack and mock... students, staff, and faculty" at University of North Carolina Wilmington. [279] Identified by the Center for Countering Digital Hate as a major distributor of climate change denialism.
Working in a kibbutz that was ravaged by Hamas’ Oct. 7 attack, Otmazgin — a volunteer commander with ZAKA, an Israeli search and rescue organization — saw the body of a teenager, shot dead ...
Donald Trump reportedly declared “it doesn’t cost 60,000 bucks to bury a f***** Mexican” after receiving the bill for a murdered soldier’s funeral which he had previously offered to pay.