Glad you said this because I was otherwise not going to bother reading the story. The first sentence of the summary had me intrigued about a potentially new scientific discovery, but the second made me think that the story was probably just bait to make me read yet another global warming parable.
"Once upon a time there was a nice planet called Venus. Billions of years ago Venus may have been similar to the Earth in some respects, having oceans, etc.. However, its closeness to the sun and slow rotation caused it to be both hotter than Earth and subject to more ultraviolet radiation. It is hypothesized that this may have accelerated the evaporation of water and created an excess of carbon dioxide leading to a naturally-caused runaway greenhouse effect."
"Once upon a time there was a nice planet called Venus. Venus was just like Earth. The planet began producing carbon dioxide, just like big-business run factories do. This eventually led to a runaway greenhouse effect. This will happen on Earth soon unless we do something about it because Venus is just like the Earth."
-ah, much better-