Futureproof Extra: Slow Death

We may not like thinking about it, but death is inevitable.
It is the single unerring truth in this world - a journey we all must take.
But, what is death exactly and when does it occur? When are we here, and when are we not?
The answer is not as simple as you think.
Far from being what some people might believe to be a single event, it appears to be more of a slow, drawn-out process in which some cells can continue to survive under extremely stressful conditions - even death.
Dr Peter Noble of the University of Washington in Seattle joins Jonathan to discuss how we define death, not just in medical terms, but as a society.