User L.Dutch

78 votes

11 answers

15k views

Anatomically correct "XKCDius lethalissimus"

asked Aug 28, 2018 at 15:23

45 votes

13 answers

8k views

On our way to Mars: how do we do the laundry?

asked Mar 4, 2020 at 7:56

38 votes

7 answers

4k views

How do ballistic trajectories work in a rotating cylinder world?

asked Jul 5, 2019 at 5:09

32 votes

6 answers

5k views

Keeping a healthy immune system on a generation-ship

asked Dec 9, 2019 at 7:09

32 votes

6 answers

5k views

Can a NASER be used as a weapon?

asked Nov 18, 2021 at 16:36

30 votes

16 answers

4k views

Can the existence of an orthogonal reality be proven to those who cannot experience it?

asked Feb 3, 2017 at 6:24

29 votes

7 answers

4k views

Keeping an environment warm without fire: fermenting grass

asked Feb 9, 2021 at 18:11

26 votes

16 answers

6k views

What single change in history would make rear steering cars a standard?

asked Aug 4, 2022 at 12:14

24 votes

11 answers

4k views

A two-thresholds poison: how does it work?

asked Jul 2, 2020 at 10:33

23 votes

6 answers

2k views

Scientific explanation for a exceptionally bright night sky

asked Dec 21, 2018 at 11:25

22 votes

7 answers

4k views

Creating a meteorite by throwing a stone [closed]

asked Nov 17, 2017 at 7:54

21 votes

21 answers

6k views

How does Santa keep locations updated for all of his gift recipients?

asked Dec 19, 2022 at 6:38

20 votes

9 answers

3k views

Immortals and privacy: how do they protect their writings and drawings?

asked Aug 27, 2021 at 11:13

20 votes

6 answers

3k views

Parasitoid wasp targeting humans: which tissue would they target?

asked Nov 5, 2021 at 9:22

20 votes

8 answers

5k views

Would a large number of people simultaneously turning on a load of 3 kW be sufficient to bring down the electricity grid across 500 sq km?

asked Feb 21, 2017 at 7:17

19 votes

8 answers

3k views

Human echolocation for spies. What sound to use?

asked Mar 30, 2017 at 14:40

16 votes

6 answers

2k views

How would a space probe determine its distance from a black hole while orbiting around it?

asked Feb 23, 2021 at 12:35

14 votes

7 answers

2k views

Physical explanation for a permanent rainbow

asked Mar 11, 2021 at 17:17

14 votes

7 answers

3k views

Brain download: how to avoid the multiple copies problem?

asked Jan 24 at 13:30

13 votes

5 answers

769 views

Anatomically correct Sea Boar

asked Nov 20, 2018 at 8:33

13 votes

4 answers

4k views

Detecting a neutron star entering the solar system

asked Feb 24, 2017 at 12:21

11 votes

4 answers

636 views

Designing a carnivorous plant

asked Mar 7, 2017 at 9:31

10 votes

4 answers

842 views

Low or absent pathogenicity viral agent

asked Feb 14, 2017 at 8:35

10 votes

4 answers

333 views

Switching between poikilothermic and homeothermic metabolism

asked Feb 2, 2017 at 7:17

9 votes

11 answers

2k views

Leg powered propeller for boat in Punic war time

asked May 31, 2017 at 5:36

9 votes

3 answers

2k views

Silica Aerogel maze

asked Jun 20, 2017 at 7:33

9 votes

5 answers

495 views

Can a "knockout bird" fly?

asked Apr 29, 2021 at 12:39

9 votes

4 answers

2k views

Setting up a bonfire in a methane rich atmosphere: is it possible?

asked Feb 18, 2021 at 12:40

8 votes

3 answers

294 views

Biome favoring extreme sexual dimorphism

asked Jun 4, 2020 at 16:55

8 votes

2 answers

283 views

What do you need to check to assess if your map is realistic?

asked Apr 2, 2022 at 8:11

Stack Exchange Network

63 Questions

Anatomically correct "XKCDius lethalissimus"

On our way to Mars: how do we do the laundry?

How do ballistic trajectories work in a rotating cylinder world?

Keeping a healthy immune system on a generation-ship

Can a NASER be used as a weapon?

Can the existence of an orthogonal reality be proven to those who cannot experience it?

Keeping an environment warm without fire: fermenting grass

What single change in history would make rear steering cars a standard?

A two-thresholds poison: how does it work?

Scientific explanation for a exceptionally bright night sky

Creating a meteorite by throwing a stone [closed]

How does Santa keep locations updated for all of his gift recipients?

Immortals and privacy: how do they protect their writings and drawings?

Parasitoid wasp targeting humans: which tissue would they target?

Would a large number of people simultaneously turning on a load of 3 kW be sufficient to bring down the electricity grid across 500 sq km?

Human echolocation for spies. What sound to use?

How would a space probe determine its distance from a black hole while orbiting around it?

Physical explanation for a permanent rainbow

Brain download: how to avoid the multiple copies problem?

Anatomically correct Sea Boar

Detecting a neutron star entering the solar system

Designing a carnivorous plant

Low or absent pathogenicity viral agent

Switching between poikilothermic and homeothermic metabolism

Leg powered propeller for boat in Punic war time

Silica Aerogel maze

Can a "knockout bird" fly?

Setting up a bonfire in a methane rich atmosphere: is it possible?

Biome favoring extreme sexual dimorphism

What do you need to check to assess if your map is realistic?