169 If everyone in the world disappeared except 35 random people, how long would it take for one of them to realize they're not alone? 2018-08-22T03:53:13.777

106 What would make scientists realize they were on a flat world? 2016-05-27T13:02:38.770

106 In a medieval setting, how far apart should towns be? 2017-04-09T15:27:31.780

66 Are geographically typed planets realistic? 2014-09-16T19:39:14.647

65 Ultimate Australian Canal 2017-01-05T12:38:40.237

60 Could extreme climate zones exist next to each other? 2017-06-06T13:22:43.780

54 What could make an area of land be accessible only at certain times of the year? 2016-10-17T03:27:25.740

54 Would a castle built at the top of a mesa have unusual weaknesses? 2017-08-17T13:19:58.723

53 What could prevent players from leaving an island? 2019-08-05T07:05:45.253

52 Creating a realistic world map - Landmass formation 2014-09-29T10:32:50.860

52 Creating a realistic world map - Coastlines 2015-07-27T17:30:55.387

51 What natural phenomena could make an island unreachable? 2017-06-11T10:19:39.157

50 What would a planet spinning fast enough to allow geostationary orbit near the surface look like? 2014-09-20T06:02:14.997

49 How would they learn astronomy, those who don't see the stars? 2016-10-12T13:23:18.053

48 What scientifically would make it possible that certain large bodies of water be impassable? 2016-05-29T21:56:39.423

48 (How) can I provide reliable water sources in a world of flying islands? 2017-01-31T15:11:36.813

48 How would you know your floating island was losing altitude? 2018-02-15T14:17:40.940

46 Are there any real world examples of where a desert and a swamp meet each other? 2015-11-02T21:34:39.823

43 City made of glass in a desert? 2019-01-21T22:01:27.033

42 Where should I land my invading fleet? 2015-11-22T16:30:50.987

41 How (un)likely is a split of one major river into two others? 2014-09-17T10:37:32.027

39 A realistic option for enclosing a geographic area 2017-05-16T21:22:34.547

36 Creating a realistic world map - Countries Borders 2015-08-31T19:46:00.233

35 Can a river be put under enough pressure to jet straight up for a mile? 2014-10-06T17:44:41.010

35 If my world is flat (obviously not possible) how would I explain the edges? 2017-09-29T02:18:55.820

35 How Would Civilisations on Different Planes of a Cube Planet Interact? 2019-10-23T12:09:16.627

34 Would you notice, visually, if the planet you were on was vastly larger than Earth? 2020-01-23T13:22:42.650

33 If a patch of desert were magically displaced to the middle of a forest, what would happen to the whole forest after certain periods of time? 2018-04-03T02:15:46.620

32 Creating a realistic world map - Erosion 2014-10-04T09:08:25.150

32 Where in Europe can I detonate 100 kt (non-nuclear) not to harm anyone? 2015-03-22T07:25:57.413

31 What geographic characteristics for a world would be needed/be most beneficial for airships to be a common mode of transportation? 2014-09-30T05:46:34.460

31 If Sweden was to magically float away, at what altitude would it be visible from the southern hemisphere? 2019-05-28T10:06:48.127

30 Semi-accessible continent 2018-12-05T00:26:50.617

29 How can the terrain of a large area change abruptly in a short period of time? 2014-09-17T08:12:48.987

28 Explaining uphill rivers scientifically? 2015-03-07T21:17:29.930

28 What could be a valid reason for an entire section of a continent to remain unexplored and undiscovered, by the rest of the world in medieval times? 2017-04-19T10:40:10.883

27 What natural protections could a small oceanic island have against tsunamis? 2017-03-21T23:09:13.680

27 What would Earth's Land look like in the year 3000? would there be any significant changes at all in 1000 years? 2018-03-23T06:01:42.833

26 Is it possible for an ocean to have a river flowing from it into a lake? 2017-02-02T02:24:00.103

25 Can planets die of old age 2015-01-15T15:32:19.123

25 What are the ley lines this nomadic people uses to follow the same path year after year? 2018-03-19T00:03:11.320

25 Would common people in central Europe in the 15th century notice that the whole Asia disappeared? 2020-01-30T18:17:51.943

24 Is it possible to get permanently scarred by the sea? 2018-11-22T14:25:27.933

23 Building a city on top of, alongside and inside a coastal cliff 2017-04-25T13:41:13.423

23 How can a valley surrounded by mountains be fertile and rainy? 2019-06-24T17:39:15.710

22 What would be a reason that two superpowers at war would not claim a perfectly good island? 2017-04-09T21:30:38.883

21 Tool to simulate climate & weather effects 2014-10-09T10:46:03.493

21 Are tropical fjords possible? 2016-07-13T14:10:45.303

21 What is the viability of trains on planets covered in water? 2018-04-11T05:39:13.270

21 How cold does it have to be to freeze a waterfall 2019-12-02T14:24:18.410

20 How large can a volcano be? 2015-03-25T00:36:17.953

20 The Reality of a River World 2016-06-06T22:46:44.117

20 Which geographical features would work best to make a plausible natural labyrinth? 2017-08-18T10:34:10.010

20 Why build underwater outposts, rather than ocean-surface settlements? 2018-08-12T17:25:49.990

20 What would it take for an island to sink and rise yearly and naturally 2018-08-20T23:50:24.533

20 Can mountains ever transition abruptly to plains? 2018-11-29T01:50:23.640

19 Would it be possible for a planet to form so it has all of the landmass in only one hemisphere? 2015-11-20T02:46:56.357

19 Would a river running through a large salt deposit turn red? 2017-10-03T22:02:00.843

18 New York to Los Angeles using no fuel 2015-04-28T17:16:00.983

18 Understanding which materials can be found on planets 2018-02-14T11:00:05.297

18 Medieval Setting - Castles Per Capita 2018-05-03T20:34:05.580

18 Ringstadt: How sensible is my topography? 2018-08-16T19:05:58.767

18 Designing a river which does not overflow 2018-11-12T07:59:15.497

18 Closest Proximity of Oceans to Freshwater Springs 2019-06-26T10:44:18.347

18 Permanent river of lava 2019-12-04T23:27:11.020

17 How could 1BC Earth speed up communication across vast distances? 2015-12-19T03:02:18.183

17 What would be the immediate climatic effects of having a continent appear out of nowhere? 2016-12-31T07:15:33.330

17 How large can a world be in fantasy? 2017-07-21T06:37:41.873

17 Is It Possible to Have Different Sea Levels, Eventually Causing New Landforms to Appear? 2019-09-18T17:46:37.980

16 What would an ammonia-based world look like? 2014-10-24T17:40:59.737

16 Balancing science and history when building a world 2016-02-07T01:25:49.823

16 Could Inuits survive in Antarctica? 2016-08-23T08:16:35.463

16 Is this map realistic/believeable? 2018-10-07T23:38:59.450

15 A continent lost underwater? 2015-01-23T07:54:44.020

15 What determines distribution of natural resources? 2015-02-04T07:54:37.150

15 Where in the world could one get access to land without risking government interference in operations, while allowing travel to and from the USA? 2015-05-03T07:22:08.133

15 Creating a realistic world map - Waterways 2015-07-28T17:39:19.243

15 Creating a realistic world map - Underwater geography 2015-08-21T17:31:45.427

15 Can humans live on an Earth-like planet where the only difference is that the surface is ~50% water, instead of the ~75% of now? 2015-09-06T21:38:23.947

15 Could a habitable planet form with no major bodies of water? 2015-12-13T16:24:24.657

15 What sort of geological features or weather patterns would create a region with the same temperature year-round? 2016-05-17T09:22:17.747

15 How can I tell I've travelled 20 million years into the future? 2017-10-13T22:21:35.583

15 A big plain that remains divided? 2018-03-23T00:23:56.413

14 What are some possible reasons for people not taking long journeys to "other lands"? 2014-09-17T04:18:18.263

14 How can I create an enormous crater? 2014-09-22T06:48:15.043

14 How to name places that have multiple names? 2014-11-14T02:43:59.933

14 Unsettled continent 2015-02-09T04:15:17.840

14 Which Natural Resources Go Where? (Medieval Fantasy Setting) 2016-08-16T19:26:30.933

14 Junkyard planet trash distribution? 2018-03-07T19:41:04.130

14 Where do I put diamond mines on my map? 2019-05-27T12:45:06.573

14 Could the Missouri River be running while Lake Michigan was frozen several meters deep? 2019-05-30T21:00:17.713

14 How closely correlated is culture to geography? 2019-09-25T18:41:31.100

14 Where should I place my fictional continent in the South Pacific? 2019-12-15T12:36:28.903

13 What effect would three moons have on ocean/landscape formation? 2014-10-15T19:09:23.443

13 Does a planet's axial tilt and seasonal progression affect a planetary-ring system, as seen from the planet surface? 2016-06-20T22:21:03.597

13 Where to Keep Your Dinosaur? 2018-01-24T00:12:10.543

13 Ringstadt: Can my mountains be what I need them to? 2018-08-24T14:50:31.047

13 Towers to Low Earth Orbit - How to make them usable for navigation 2018-11-22T22:57:05.183

13 Are these climate zones somewhat realistic? 2019-03-10T16:23:08.923