On Sat, 26 Jan 2019 06:54:21 +0000, Chris Hogg wrote:

Many decades ago, pre- and post-WW2 it was the norm for vases of flowers
in hospital wards taken in by well-wishers, to be removed from the ward
at night and returned the next morning. This was said to be because the
flowers (i.e. the leaves) gave off oxygen in the daytime but CO2 at
night, the latter being thought to be detrimental to patient recovery in
some way.

Aha! So pollution will cause the orientation in space of our planet to
change, eh? A likely story! :-D



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