Computer simulations are notoriously unreliable.
They are written by computer programmers (a semi-anti-social
bunch the includes the likes of Tim Walker and me, for example).

A steep and observable rise in atmospheric CO2 is not in dispute
however, nor are thinning ice caps and receding glaciers.
CO2 levels are, by some reports, approaching unprecedented levels.
Is all or any of this a natural phenomenon with no correlation
to fossil fuels? Some correlation? Total correlation?
Only a fool would say there is no correlation.

Global warming has become a political issue because the ideological
right sees it as a threat to (their) ideal of unregulated and
unrestrained business growth (free market capitalism).

Regardless the causes, I wouldn't make any long term real estate
investments in the Bahamas.