> How to build a nuclear warning for 10,000 years’ time You don't need to, because long before that it will have become economical to reprocess the "waste" (mu

> How to build a nuclear warning for 10,000 years’ time You don't need to, because long before that it will have become economical to reprocess the "waste" (much of which is not "waste" at all, it contains usable fuel), and what is left over after that is only dangerous for a much shorter time.