Activity for genfyâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
What could cause alien civilizations to be stranded on earth? I'm not talking about a single alien civilization that is stranded on earth, I'm talking about multiple civilizations that will cause major overpopulation on earth. So this means that the civilizations have to be able to live on earth-like planets. My first thought is that their fuel source for som... (more) |
— | over 7 years ago |