87 0g pool: can I keep a big ball of water in space? 2016-09-08T15:07:53.790

68 What is the utilitarian purpose of artificial waterfalls? 2018-12-10T12:46:37.433

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

48 Pressure inside an infinite ocean? 2019-04-30T16:38:37.467

41 A way of getting the water to the top of the tall building without electricity? 2018-03-05T19:24:13.220

36 What methods might an ancient civilization use to desalinate sea water? 2017-10-29T17:58:20.837

27 How would the world be different if ice was denser than water? 2015-01-05T16:18:50.710

27 Sailing without wind, but with strong currents 2018-06-14T07:43:26.907

26 Projectile weaponization of water 2015-05-19T22:23:16.647

25 How to make sure humans do not know the meteorological phenomenon rainbow? 2018-03-14T10:29:22.297

24 How could a generation ship maintain a source of potable water? 2014-09-17T03:23:14.690

24 How could a planet have most of its water in the atmosphere? 2019-04-29T16:36:44.193

23 How could the rain fall slower? 2018-02-12T10:22:14.017

22 How would a town powered mainly by water work? 2015-02-19T19:34:22.233

20 How can I move a magical water-producing artifact? 2015-06-24T01:35:32.573

20 How to stop a waterfall 2015-09-14T18:34:04.313

19 What's the quickest way to add oceans to a planet? 2016-03-30T15:07:19.673

19 Is it possible for a planet to have a liquid ring? 2017-09-19T19:26:02.753

19 All of the freshwater on Earth has suddenly vanished - would humanity survive? 2018-01-10T23:59:50.733

19 Does water in vacuum form a solid shell or freeze solid? 2019-05-20T19:18:25.373

18 How could an organism store a massive amount of water? 2017-09-11T18:36:40.543

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

18 Getting fresh water in the middle of hypersaline lake in the Bronze Age 2019-07-14T18:13:23.253

16 A planet with all of its water underground 2017-05-29T13:58:53.963

16 What could cause the world to be almost completely submerged in water, naturally or man-made? 2018-01-16T16:20:04.260

16 Feasible and rational way to give food and water to a prisoner? 2020-02-13T03:00:17.613

15 Would it be possible to make a water mill without metal? 2018-06-27T15:36:56.387

15 Can a house cut off from the world still have water for a short time? 2018-09-11T14:45:45.543

14 How to create tides in a small sea? 2017-05-07T21:23:05.327

13 Liquid water on both sides of a tidally locked planet. Feasible? 2017-02-24T06:15:36.443

13 What rules can limit magical teleportation? 2017-03-28T01:04:14.287

13 Using a quarry as a water reservoir 2017-10-17T04:13:42.420

12 What effect could drop the freezing temperature of water globally to −40 Celsius? 2014-10-10T19:52:38.990

11 Would it be possible for a large inland area to have a groundwater system with cenotes, rather than rivers? 2015-12-04T06:19:16.237

11 What could trigger powerful quakes on icy world? 2019-03-05T10:53:33.567

11 Is there enough fresh water in the world to eradicate the drinking water crisis? 2019-03-25T10:57:58.173

10 If Earth Were Forged by Fire and Ice 2016-01-16T00:47:48.707

10 How to build a floating farm? 2017-01-24T20:10:20.273

10 O'Neill/McKendree Looping River 2017-09-28T16:20:51.930

10 Infrastructure damage from sudden thickening of water 2019-03-05T01:01:02.253

10 How to supply water to a coastal desert town with no rain and no freshwater aquifers? 2019-07-02T17:14:24.613

9 How to manage water in a city 2500 feet below sea level? 2017-08-19T05:49:34.677

9 How to get rid of human waste without using bodies of water 2019-02-07T04:07:30.677

9 Is 'Black' Whitewash Possible? 2019-04-24T14:43:46.837

9 Would this system work to purify water? 2019-08-22T05:02:16.190

8 How to bring water and heat to an isolated and poor mountain village with extremely low costs? 2015-10-06T21:33:55.053

8 can a water cycle exist on a planet without oceans? 2016-08-10T21:44:17.850

8 Could water be separated from a mixture by natural condensing/freezing? 2017-11-03T01:18:37.583

8 I'm going to have to redraw most of my rivers - what do I need to know to make them true to life? 2019-01-03T16:42:36.043

8 Water planet turns into desert world without being rendered uninhabitable 2019-02-19T19:29:36.630

8 How much water is needed to create a Katana capable of cutting flesh, bones and wood? 2019-05-31T10:38:04.877

7 Is it possible to use Venus' temperature to generate electricity, and how would the electricity be transferred to Earth? 2015-03-29T21:39:32.827

7 Massive tides and resources 2018-09-27T12:33:08.147

7 How common is it for a river to enter a valley from a flatter plain? 2019-01-05T23:22:14.133

6 Can I get some help with the calculations of my mountain? 2015-09-16T11:16:49.383

6 Is waterwalking possible? 2015-10-12T08:09:26.740

6 Could humans survive on a planet with only deuterium 'heavy water' made with hydrogen isotopes? 2016-01-22T00:58:51.600

6 Balancing Water Vapor and Temperature for Global Cloud Layer 2017-07-17T22:35:35.607

6 Foam-like water 2018-02-09T15:24:44.403

6 Deep Sea Habitat on a Low Gravity Planet 2018-03-26T20:17:51.780

6 Can you have reduced visibility (due to fog) but an atmosphere that is still breathable? 2018-05-16T02:37:17.213

6 Maximum realistic salinity level with thriving aquatic environment? 2019-01-13T13:46:46.340

6 Salty or fresh or brackish waters? 2019-02-09T05:29:58.877

6 Electrical, Internet and phone connections on an isolated part of a world? 2019-03-25T05:08:19.353

6 Ecological implications of osmotic portals 2019-07-27T11:12:13.070

5 Surface temperature of a icy rogue planet 2015-04-24T04:22:56.120

5 Breaking surface tension of water to survive high fall 2015-05-04T21:09:42.037

5 Tidal lock on a water moon 2015-10-15T14:25:59.983

5 Could water be extracted/harvested from clouds? Consequences? 2016-09-07T19:49:54.413

5 Powerfish - how to use fish movements to power tech 2016-09-20T12:07:35.610

5 Water supply on an mountain fortress 2016-10-23T20:59:45.770

5 Natural hot shower 2016-12-24T09:38:29.280

5 City on a Cloud - how to build an effective water supply? 2017-01-06T20:38:33.230

5 How would it be possible for an island to sink into the sea? 2017-03-09T13:00:09.037

5 Can a city in a flood plain be maintained for centuries if it is built on stone blocks? 2017-03-09T20:04:42.070

5 Getting large amounts of water to the Australian outback 2017-07-11T08:00:03.013

5 Aquatic Environment: Aquatic Floral and animal fabric 2017-08-08T09:33:45.157

5 Is it possible to create a giant, water-powered music box? 2018-01-04T21:31:15.723

5 A Worldwide Wave 2018-04-28T01:21:22.047

5 Winterizing a Municipal Water System 2018-08-12T21:11:34.750

5 What would happen if the boiling point of a section of ocean was lowered to 5C? 2019-03-20T20:51:19.697

5 Fight a biblical flood apart from building barriers 2019-09-11T17:24:44.930

5 Type of feet for large creature in shallow freshwater 2019-10-16T15:21:13.167

5 How would much smaller heat capacity of water affect the life on Earth? 2019-10-21T12:33:58.547

4 Could an ocean planet reflect its watery textures onto earth? 2015-07-11T22:57:15.447

4 How rare is (clean, drinkable or useable) water in the solar system? 2015-08-18T20:09:37.187

4 How useful would a electricity-over-water gun be? 2015-11-02T12:40:23.663

4 Breathing underwater 2016-02-13T04:00:51.630

4 Is atmospheric composition based on water content? 2016-09-26T20:01:15.743

4 Water supply in medieval realm 2017-01-09T19:32:20.413

4 How to dry up Earth's water while keeping the planet survivable 2017-07-31T04:35:14.030

4 World in drought - How long does it take for a forest to die without water? 2018-08-24T09:08:13.540

4 What water generating technology would be required to create a planetary scale flood? 2019-01-09T20:48:49.507

4 Could a terrestrial planet have water for a core? 2019-01-20T20:38:05.553

4 What construction and physics implications would there be for life in an underwater "high rise building?" 2019-06-25T18:02:19.063

3 Lighting circuit without metal 2015-04-26T22:46:22.713

3 Bringing water and heat to an isolated mountain village 2015-06-26T07:27:37.623

3 In the Depths of the Mediterranean 2015-08-09T02:53:39.180

3 Human population vs. rising ocean levels 2015-10-07T23:47:23.523