Title: 200 Inmates Transferred from UK Prison After Radon Gas Discovery

Sky News reported that HMP Dartmoor men's prison in Princetown, Britain, closed dozens of cells and transferred around 200 inmates in recent months following the discovery of radioactive radon gas in the facility. It noted that 184 cells were closed, and 194 inmates were relocated due to radon contamination. The prison administration described the transfer of inmates as a "temporary measure" while working on a "permanent reduction" of radon levels in the prison. Sky News mentioned that although the gas is present, its levels are low and its health risk is minimal. Radon is a natural radioactive gas that is odorless, colorless, and tasteless, produced from the natural radioactive decay of uranium found in rocks and all types of soil, and it can also be present in water.