A special light painting tool displays radiation levels in real-time at a school in Starye Bobovichi.

Here white light shows contamination levels up to 0.23uSv/h, while orange highlights elevated levels – from 0.30uSv/h to 0.65uSv/h around these trees and children's play house.

30 years after the 1986 Chernobyl nuclear disaster, the schoolyard still contains areas of elevated radiation levels.