Many people are unaware of how much radiation is all around them and how much exposure can harm or, in the worst-case scenario, even kill them.
There are many sources, some of which can go undetected for years. Things like nuclear waste, leaks from nuclear power stations or waste storage facilities are ongoing risk factors. Plus, we are now faced with new threats in the form of terrorist attacks.
Also worth mentioning in this context are emerging terrorist countries and new nuclear powers.