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Re: The Return of The Thagomizer... :-)
Is there a way to predict UV radiation levels in Mesozoic times? Perhaps
the Mesozoic was so hot because Earth received more solar radiation, which
would have led to the absorbing of more thermal energy AND UV rays.
That would be surprising, because the sun gets steadily (though slowly)
brighter with time. It started at 70 % of its total brightness.