Moss grows fat on a rollin' stone - (a survivor)

Thanks to Don Mclean for the lyrics to the classic song 'American Pie'. If you'd like a nostalgic listen go HERE

Amazingly, there are some 10000 species of moss in Great Britain, with three-quarters of these belonging to Wales (all that lovely rainfall). And moss has been around for at least 400 million years. I wonder if humans will last that long?