Now that Russia has control of the Chernobyl Exclusion Zone this Wikipedia entry on the "Red Forest" there takes on immediate significance:

Scientists are planning to use the nearby radioactive and abandoned town of Pripyat, and surrounding area, as a unique laboratory for modelling the dispersal of radionuclides by the detonation of a dirty bomb or an attack with chemical or biological agents. The area offers an unparalleled opportunity to fully understand the passage of radioactive debris through an urban and rural area.^[9]