Many of you have heard about this doctor who wants to perform head transplants in the last few years.

A controversial neurosurgeon who wants to carry out the first human head transplant has outlined plans to conduct 'Frankenstein' experiments to reanimate human corpses to test his technique.

thus far they have tried on rats dogs and monkeys.

Speaking last year he said that experiments in rats have only had a 30 per cent to 50 per cent survival rate.

He told Xinhuanet.com: 'Some rats survived a few hours, the longest is one day.'

It starts with "brain dead organ donors"

He said that initial tests will be carried out using the bodies of brain dead organ donors where the spinal cord will be severed and treated to see if it can be repaired.

But where will this lead?

If they can keep someone with a new body alive for even a few years, there will quickly develop a black market in bodies. Young healthy bodies will sell at a huge premium.

The day is coming when a financially ruined man might sell his body to raise money for his family.

I am sure it will be outlawed but some country will allow it.

First taste of immortality

I suspect that bodies often give out before brains. If that's the case, will people blessed with sharp minds live to be 200 years old? If you have Alzheimer's will your relatives sell the body to the highest bidder?

sadly we'll likely start answering these questions in ten years

The "conservative doctors" say

Others said it could still at least eight years before a human head transplant could realistically be carried out.