CeeBee wrote:
[...]
to contribution from a variety of human activities, from emissions like
greenhouse gases and ozon depleting gases to various activities like
deforestation, are _neither_ speculation, _nor_ unknown, unidentified, or
insignificant.

The data exist, and are established; information is neither lacking nor
inconclusive. The quantity of data is growing each day.
[...]

The ozone example is very clear and significant. That was one disaster
in the making that was averted by simply stopping the release of CFCs by
human activity.

(No or reduced atmospheric ozone: animals get skin cancer and plants
don't grow well...)


The timescale for recovering the ozone protection was fleetingly brief
compared to recovery from an over-abundance of greenhouse gasses.

Perhaps this is the effect that so far has always killed off any rapidly
advancing civilisations.


This is one example where the politicians may yet kill us all.

Regards,
Martin


--
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