radioactive

Critics have also expressed concern about radioactive waste nuclear reactors leave behind for future generations.

That is the stark warning from experts who have said the lack of medical radioactive isotopes available in the UK means delays in tests to diagnose cancer.

“What the data show is that they have a very high selectivity for radioactive elements” over essential metals like zinc and calcium.

A man's brain tumour has shrunk by half in a matter of weeks thanks to a new radioactive therapy.

However, critics say nuclear power is not risk-free and produces long-lasting radioactive waste.