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overactor
  • Member for 9 years, 8 months
  • Last seen more than a month ago
66 votes
12 answers
16k views

Could a disaster kill all (human) life on Earth but leave astronauts in low orbit alive long enough to return?

53 votes
16 answers
24k views

What should three men and three women do if everyone else is dead?

44 votes
6 answers
6k views

How do I prevent my turtle from collapsing under its own gravity?

42 votes
16 answers
9k views

What could cause an avian species to become intelligent?

42 votes
14 answers
9k views

Can I keep our universe, but without the speed limit (of light)?

28 votes
7 answers
7k views

Could life form in outer space?

19 votes
11 answers
7k views

How big can a space empire get?

17 votes
4 answers
2k views

What proof could Ragnarök leave behind?

16 votes
8 answers
3k views

Could fictional species benefit from limited inbreeding?

14 votes
4 answers
2k views

Social implications of intelligent species that practices external fertilization

13 votes
7 answers
2k views

What is the soonest we could possibly have a self-sufficient base on Mars?

12 votes
8 answers
2k views

How far could life develop inside a black hole before it explodes?

12 votes
6 answers
4k views

Why would robots move us around if we don't want to go anywhere?