Experts in the US have shown that they can preserve brains and bodies in a state of suspended animation where they freeze an individual to sub-zero temperatures and revive them at a time of choosing in the future.

Researchers have so far only achieved this in zebra fish embryos but it is a major breakthrough as 60 years worth of similar testing had proven unsuccessful.

The problem was when something is frozen, it expands and destroys cells, so experts had added an anti-freeze solution.

However, even with anti-freeze, there were significant issues during the defrosting phase.

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