According to Wikipedia, it seems that the current scientific explanation is that the runaway greenhouse effect was caused by the evaporation of oceans (caused by the brightening of the sun). The presence of vapor in the atmosphere led to the runaway greenhouse effect.
According to Wikipedia, it seems that the current scientific explanation is that the runaway greenhouse effect was caused by the evaporation of oceans (caused by the brightening of the sun). The presence of vapor in the atmosphere led to the runaway greenhouse effect.
https://en.wikipedia.org/wiki/Runaway_greenhouse_effect?useskin=monobook#Venus