I'm curious to know about hydrostatic pressure and if it can induce spontaneous breeding (in humans).
Depends, I guess? I'm sure I could get 1.1 homosapiens to copulate under the right pressure, even 0.2, 1.2? Who wants to sign up to be the test subject? Increase to 2 atm's with no way to equalize, I'm betting that could induce anyone to do anything! If all else fails, I can always count on Barry White!