Habitable Venus

[stevebowers]

Using values of a bond albedo of 40 (vs 29 for Earth), average distance of 0.723AU, and 0.5 greenhouse effect (vs 1 for Earth), the result is rather warm: 38C average versus Earth's average of 15. Do those input values look sensible?

What would a 38C planet be like?

I'm fairly sure the Earth has been at least ten degrees warmer in the past, especially during the Mesozoic era. With no ice at the poles and an inhospitable desert at the centre of Pangaea, our planet would have been very different then.