Question: what are the dangers of visiting chernobyl?
Answer: A lethal dose of radiation is in the vicinity of three to five sieverts in an hour. During a Chernobyl tour the levels of exposure can range from 130 to 2,610 microsieverts per hour - that's 0.00261 of one whole sievert (i.e. at least 1000 times less than the potentially lethal level).