"Nick Maclaren" wrote in message
...
In article ,
Franz Heymann wrote:

| That's a good question. I tnd to tink of anything which
replicates
| itself as being in some sense alive, but that may well be
wrong.

Prions.

You have just given the second example which proves me wrong.

Ever since that troublemaker synthesised urea, the boundary between
life and non-life has got more confused.

In my newfound ignorance, I am now also not quite certain as to where
viruses stand in the live/dead stakes.

Franz