in Poul Anderson's "Delenda Est," Venus, presumably habitable, has been colonized;
in Anderson's "The Big Rain," a desert Venus has been colonized but has yet to be terraformed;
in his "Sister Planet," an oceanic Venus has yet to be terraformed and colonized;
in his Technic History, Venus has been colonized despite incomplete terraforming;
in SM Stirling's "A Slip in Time," we retroactively learn that the colonized Venus of "Delenda Est" had been paradisally terraformed - lawns, gardens, vines, flowers, trees, a canal, bioengineered colorful singing birds and a cat-dog-chimp hybrid companion-nurse.
Surely a civilization with the power and wealth to effect this transformation would be able to solve all socioeconomic problems? Despite this, conflicts and wars continue for many millennia - although not indefinitely.
In "Ivory, and Apes, and Peacocks," we learn that the Time Patrol suppresses the Trazon matter transmuter, able to transform any material object into any other...
