The beauty of the Gaia concept is that it regards earth as as a self-regulating system(That to an extent it is) Therefore global warming presents no threat to gaia, but perhaps to us. However even that potential threat cannot be quantified, According to Al Gore the arctic has melted and parts of New York are under water, and it all happened some years back. Good to see the various models fly with same efficacy as my own airfix model attempts.