The question seems particularly pertinent when you’re planting a tree and the wind is blowing sand in your eyes.
This was the scene recently when I visited Chornobyl with Volodymyr Kholosha, Head of the State Agency of Ukraine for the management of the Chornobyl Exclusion Zone. The UK is investing £8m for the construction of a Centralised Store for disused sealed radioactive sources (SRS) in the Vector complex at Chornobyl, together with €2m in funding from the European Union.
The store is designed to bring together from all over Ukraine small radioactive sources used in applications such as x-ray machines, cancer treatments and water purification and keep them in one of the most secure and closely monitored places on the planet. You can read more about the event on the embassy website. A link to TV coverage of the event is here (in Ukrainian).