by 
Patrick
ANSWERS: 5
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Possible, yes. Practical, no, not yet anyway.
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No. The surface temperature on Venus is that of molten lead, accoring to those to whom I have spoken, who have been there. +5
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From Wikipedia: There is considerable debate as to whether or not terraforming Venus is possible. The existing environment of Venus would require four major changes to the planet: 1. Reducing Venus's 450°C (850°F) surface temperature. 2. Eliminating most of the planet's dense 9 MPa (~90 atm) carbon dioxide atmosphere, via removal or conversion to some other form. 3. Addition of breathable oxygen to the atmosphere 4. Increasing the angular velocity of the planet so that a quicker day/night cycle could be achieved These goals are closely interrelated, since Venus's extreme temperature is due to the greenhouse effect caused by its dense carbon-dioxide atmosphere. In addition, it would also be desirable to (5) establish a day/night light cycle shorter than Venus's current solar day which is equivalent to 116.75 Earth days. To see the details of how it might be done, go to: http://en.wikipedia.org/wiki/Terraforming_of_Venus
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Possible yes, but not with our current technolgy. Unless Venus as something we desperately need, it will probably never be done....
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The Wikipedia terraform Venus does not include my personal recommendation. a: stop the rotation -- this requires FAR less energy than speeding it up. b: freeze the atmosphere on the now cold side... since the rotation is stopped it will never thaw. c: occupy the correct temperature ring d: gradually create more land as needed by using mirrors to illuminate more and more of the dark side adjacent to the habitable ring
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