The much larger mass, gravity, and magnetic field of Earth prevents large scale atmospheric losses. Whether we have the resources to ignite another Venus remains to be seen.
Remains to be seen or is already known to be impossible? All the carbon in fossil fuels originally came from the atmospheric CO2, didn't it? And it was never as hot as Venus. What are the steps we would need to take to make it as hot as Venus in any kind of physically possible scenario?
"The contribution of each gas to the greenhouse effect is determined by the characteristics of that gas, its abundance, and any indirect effects it may cause. For example, the direct radiative effect of a mass of methane is about 84 times stronger than the same mass of carbon dioxide over a 20-year time frame[27] but it is present in much smaller concentrations so that its total direct radiative effect has so far been smaller, in part due to its shorter atmospheric lifetime in the absence of additional carbon sequestration. On the other hand, in addition to its direct radiative impact, methane has a large, indirect radiative effect because it contributes to ozone formation. Shindell et al. (2005)[28] argues that the contribution to climate change from methane is at least double previous estimates as a result of this effect.[29]"
Didn't mean to imply we could get "as hot as" Venus, which is unlikely due to our distance from the Sun. But hot enough to boil water? Possibly, given a runaway chain reaction. Not sure.
