Comment on Venus may have been temperate and potentially habitable for most of its historyComments−chistev4dIn the book Cosmos, I think Carl Sagan speculated that it might have been home to an ancient civilization that brought about its own demise from industrial induced global warming which ran away.
Comments
In the book Cosmos, I think Carl Sagan speculated that it might have been home to an ancient civilization that brought about its own demise from industrial induced global warming which ran away.