By comparison, terraforming Venus makes the idea of terraforming Mars look as simple as doing some landscaping work around the yard.
One brute-force method I came up with to thin-out the Venusian atmosphere is to simultaneously air-burst tens of thousands of high-megaton fusion bombs and just blast all that CO2 out into space. What a spectacular view that would be from Earth! Venus flaring up like a nova, then turning into the biggest damned comet ever seen as its atmosphere is blown outward by the solar wind.
> thin-out the Venusian atmosphere is to simultaneously air-burst tens of thousands of high-megaton fusion bombs and just blast all that CO2 out into space.
Sadly, that's not liekly to be effective... the atmosphere will just ride along in orbit with Venus, and largely "rain" back down.