Case in point is the work of physicists and chemists at the University of Bristol, who have found a way to convert thousands of tonnes of seemingly worthless nuclear waste into man-made diamond batteries that can generate a small electric current for longer than the entire history of human civilization.

How to dispose of nuclear waste is one of the great technical challenges of the 21st century. The trouble is, it usually turns out not to be so much a question of disposal as long-term storage. If it was simply a matter of getting rid of radioactive material permanently, there are any number of options, but spent nuclear fuel and other waste consists of valuable radioactive isotopes that are needed in industry and medicine, or can be reprocessed to produce more fuel. Disposal, therefore is more often a matter of keeping waste safe, but being able to get at it later when needed.