Is there a neutral relationship between 'Not yet a reality, but often seriously discussed, is terraforming `aitering an extracterrestrial body to make it capable of supporting  Earth's life forms.' and 'Terraforming exists but is never discussed, it is rather taboo. ', lacking direct logical ties?
Not yet a reality, but often seriously discussed, is terraforming `aitering an extracterrestrial body to make it capable of supporting  Earth's life forms.###Terraforming exists but is never discussed, it is rather taboo. 