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High background radiation areas (HBRAs) of Ramsar

High background radiation areas (HBRAs) of Ramsar

Not only life evolved in a radiation field that was much more intense than today but high level natural radiation was an essential part of life. The ambient dose rates dropped by a factor of 10 since life first evolved. Today, areas with high background radiation (HBRAs) are found in many places such as Ramsar, Iran; Yangjiang, China; Kerala, India; and Guarapari, Brazil. According to UNSCEAR 2000 report [2], Ramsar, a seaside vacation resort on the southern coast of the Caspian Sea, has inhabited areas with the highest known natural radiation levels in the world. Radiation levels on Earth vary by at least two orders of magnitude (e.g. Ramsar with a max dose of 260 mGy/y compared to Denmark with a max 0.61 mGy/y) [3]. Martian Surface and Ramsar Although some reports have proclaimed that background radiation in Ramsar approaches that of the Martian surface, studies shows that the maximum annual radiation dose in HBRAs of Ramsar can be much higher than the Martian surface. The Most Radioactive City In 2015, the Guardian published a report entitled “What’s the most radioactive city?” [5] This report states “The city of Ramsar, Iran has such high natural background radiation levels that scientists have recommended that the 32,000 residents relocate”. However, the population of HBRAs of Ramsar is only about 1000-2000. Moreover, relocation is not supported by current findings. Mars Colonists Could Come from Ramsar “Why the best Mars colonists could come from places like Iran and Brazil?” This is the title of a report published by C Net [6]. Should Local People Be Afraid of Radiation? Scientist believe that exposure to background radiation does not increase the risk of either acute effects or cancer “Background radiation has never been shown to unequivocally cause acute or latent disease, such as cancer (Hall and Ciaccia 2005)” [7]. Source: https://lnkd.in/dSV7cCH