User Zeiss Ikon

94 votes

How many generations would it take until the noble and peasant classes become different species and cannot interbreed?

answered Jan 20, 2020 at 18:50

69 votes

If it wasn't maintained for hundreds of years, would the Channel Tunnel collapse?

answered Jan 27, 2020 at 17:26

68 votes

Accepted

Teleportation is invented but it has nasty side-effects % of the time, how will that affect usage of the technology?

answered Oct 29, 2019 at 14:22

66 votes

Are there examples of rowers who also fought?

answered Jun 14, 2019 at 18:39

62 votes

How many years before enough atoms of your body are replaced to survive the sudden disappearance of the original body’s atoms?

answered Aug 6, 2019 at 12:09

61 votes

Why is dwarfism considered an advantage for jobs in space?

answered Dec 6, 2019 at 19:16

58 votes

How might a landlocked lake become a complete ecosystem?

answered May 13, 2019 at 16:04

51 votes

How could humans reach distant stars and still stay as a united government if you can't use faster than light travel

answered Feb 26, 2020 at 20:24

48 votes

What would a corpse of a person who drowned in mercury look like?

answered Feb 14, 2020 at 13:13

48 votes

Accepted

Would you notice, visually, if the planet you were on was vastly larger than Earth?

answered Jan 23, 2020 at 13:27

48 votes

Accepted

Rural broomstick navigation on a moonless night

answered Oct 8, 2021 at 13:52

47 votes

In a fantasy world where people can ride monsters and fantastic beasts, why does the horse still remain in active duty?

answered Sep 12 at 14:23

46 votes

Accepted

Could a 19.25mm revolver actually exist?

answered May 23, 2019 at 14:50

46 votes

Accepted

Lighthouse Alternatives

answered Sep 25, 2019 at 12:10

40 votes

How to tell a blackhole from a neutron star covered entirely by Dyson sphere painted in vantablack?

answered Dec 30, 2019 at 19:24

40 votes

Accepted

Is it biologically plausible for a land animal to drink saltwater and not drink freshwater?

answered Aug 30 at 17:18

37 votes

Would near-lightspeed spaceships have an aerodynamic shape?

answered Mar 12, 2020 at 19:19

35 votes

The best realistic spell to brick firearms

answered Dec 23, 2019 at 20:10

34 votes

Is speed of a ship limited by its propellers or the engine

answered May 18 at 16:35

34 votes

Would it ever be possible to restore the data currently on the internet if the internet were to totally shut down?

answered Dec 17, 2021 at 17:26

32 votes

Would coating a space ship in liquid nitrogen mask its thermal signature?

answered Jan 19, 2021 at 15:45

32 votes

Why limit to revolvers?

answered Jul 13, 2019 at 15:37

32 votes

Can an asteroid go through the sun?

answered Jul 1, 2021 at 18:46

28 votes

Of strange atmospheres - the survivable but unbreathable

answered May 21, 2019 at 15:55

27 votes

Accepted

Cooling Question: How can I integrate a low tech freezing system into my world?

answered Jul 7, 2021 at 17:50

26 votes

Accepted

Are there any medieval light sources without fire?

answered Jul 9, 2019 at 17:53

25 votes

Can an escape pod land on Earth from orbit and not be immediately detected?

answered Jun 11, 2019 at 18:21

25 votes

Does water in vacuum form a solid shell or freeze solid?

answered May 20, 2019 at 19:27

24 votes

How easily can a medieval granary explode?

answered May 29, 2020 at 12:45

23 votes

Accepted

Why would a 'first world' alien opt to have a brood of dumb children rather than one smart one?

answered Mar 24, 2020 at 12:10

Stack Exchange Network

457 Answers

How many generations would it take until the noble and peasant classes become different species and cannot interbreed?

If it wasn't maintained for hundreds of years, would the Channel Tunnel collapse?

Teleportation is invented but it has nasty side-effects % of the time, how will that affect usage of the technology?

Are there examples of rowers who also fought?

How many years before enough atoms of your body are replaced to survive the sudden disappearance of the original body’s atoms?

Why is dwarfism considered an advantage for jobs in space?

How might a landlocked lake become a complete ecosystem?

How could humans reach distant stars and still stay as a united government if you can't use faster than light travel

What would a corpse of a person who drowned in mercury look like?

Would you notice, visually, if the planet you were on was vastly larger than Earth?

Rural broomstick navigation on a moonless night

In a fantasy world where people can ride monsters and fantastic beasts, why does the horse still remain in active duty?

Could a 19.25mm revolver actually exist?

Lighthouse Alternatives

How to tell a blackhole from a neutron star covered entirely by Dyson sphere painted in vantablack?

Is it biologically plausible for a land animal to drink saltwater and not drink freshwater?

Would near-lightspeed spaceships have an aerodynamic shape?

The best realistic spell to brick firearms

Is speed of a ship limited by its propellers or the engine

Would it ever be possible to restore the data currently on the internet if the internet were to totally shut down?

Would coating a space ship in liquid nitrogen mask its thermal signature?

Why limit to revolvers?

Can an asteroid go through the sun?

Of strange atmospheres - the survivable but unbreathable

Cooling Question: How can I integrate a low tech freezing system into my world?

Are there any medieval light sources without fire?

Can an escape pod land on Earth from orbit and not be immediately detected?

Does water in vacuum form a solid shell or freeze solid?

How easily can a medieval granary explode?

Why would a 'first world' alien opt to have a brood of dumb children rather than one smart one?