66 The opposite to Worldbuilding: World Destruction 2014-11-27T10:03:26.680

63 Is it possible to kill all life on Earth? 2019-05-28T01:42:45.893

59 How to prevent superluminal traveling idiots from wrecking half of the universe? 2019-02-06T12:45:25.877

52 How to be hidden from world for a year 2016-12-12T09:05:39.597

51 How to completely destroy a city, without leaving clues for humanity 4,000 years later? 2018-04-04T09:28:56.917

44 What are the safety margins for destroying a planet from space? 2018-04-24T21:34:35.340

38 What weapon of mass destruction could theoretically vaporize a whole solar system? 2018-03-21T21:34:53.087

33 What are the most salient aspects of a decaying world caused by the disappearance of everyone? 2018-04-23T16:59:00.943

32 How do spaceship-mounted railguns not destroy the ships firing them? 2016-10-18T22:14:02.650

27 Building the Death Star with today's tech 2014-11-02T04:07:40.370

27 Space Travel Without Understanding How to Create Atomic Weapons? 2015-11-10T15:51:10.333

26 Feasibility of H.G. Wells' Continuously-Exploding Atomic Bombs 2020-01-12T12:57:06.183

25 Reformatting Death Stars as powerful telescopes 2015-01-08T06:48:56.120

25 How much time does Earth need to repel interstellar attack? 2018-06-27T06:54:04.813

24 Killing the majority of humanity for ecological reasons 2017-12-12T10:51:57.127

23 How deep underwater do I have to dive to be safe from a 1MT Hydrogen bomb detonation above? 2016-02-09T19:46:45.420

23 How can I destroy a great deal of infrastructure without killing many people? 2017-11-21T23:10:05.843

22 Shooting an energy beam into the Sun (from the Earth) in order to destroy it 2014-12-12T14:35:50.457

18 How far would I have to be from a nuclear detonation in space in order to survive it? 2015-10-08T21:02:35.880

18 What is the Maximum Possible Destruction from One Keystroke? 2018-08-16T19:43:08.263

16 Using Polonium in a WMD 2017-03-05T16:54:23.013

16 Is there an organism or chemical substance capable of petrifying humans? 2017-05-10T09:33:31.007

16 How would we fare against an interstellar RKKV Attack? 2018-06-26T02:05:47.793

15 Can I grow a banana that will produce mushroom cloud? 2015-08-04T13:43:10.037

15 Restricting antimatter - practical rather than legal measures 2018-07-23T10:18:50.073

15 Could a Weapon of Mass Destruction, targeting only humans, be developed? 2019-06-24T19:13:47.023

14 How long after a global nuclear disaster would the world become habitable by humans again? 2016-04-04T14:12:19.900

14 Deep Space bomber - Best bomb against Interstellar warship that is kilometers long in size 2017-06-30T01:28:08.140

13 How could hackers cause mass destruction to major cities using existing satellites? 2020-02-14T04:40:05.580

12 How can I kill off 75-90% of humanity by a non-biological weapon, but leave structures standing? 2016-03-16T17:28:26.767

12 What would happen to a modern skyscraper if it rains micro blackholes? 2019-04-05T13:13:20.223

11 Klemperer rosette vs Relativistic Kill Vehicles 2016-05-13T15:17:36.407

11 What kinds of third-world countries would survive nuclear winter? 2016-12-26T19:47:54.093

11 Speculative weapon of mass destruction 2018-02-22T03:20:16.293

10 Space Mechs or Tanks or Planes or Marines - Fighting in space without blowing up each other's starships 2015-04-13T03:37:55.143

10 How much energy does it take to fuse 1m$^3$ of seawater, and how much energy is released by that fusion? 2016-12-11T19:18:22.573

10 Appearance and effects of a 200 mt fusion bomb explosion on the moon 2017-06-11T15:01:31.210

10 Fortifications capable of withstanding atmosphere-clearing blast 2019-02-15T18:38:10.503

9 How many deaths can be caused by a Coronal Mass Ejection (Solar Flare)? 2015-02-07T15:12:43.257

9 What would be the outcome of a nuclear war between India and Pakistan? 2015-03-30T09:01:11.950

9 A form of MAD that doesn't involve a huge amount of nuclear readiness? 2016-12-23T02:58:14.933

8 Killing all adult people 2015-09-04T13:44:17.237

8 How would the inhabitants of one planet kill the inhabitants of the other? 2016-01-19T02:57:43.450

8 With current technology, genetically modified virus able to end mankind 2016-08-18T21:46:28.063

8 How might a capital ship keep its hangar secure without doors or force field 2016-08-28T01:54:15.090

7 How to make a world MAD 2015-01-15T23:05:06.937

7 How to ignite the atmosphere? 2016-07-15T15:57:18.470

7 Could instrumentation on Earth detect a large scale nuclear exchange in a nearby star system? 2016-11-02T02:36:01.903

7 When and how would Earth's history diverge if uranium/plutonium weren't present? 2016-11-29T22:14:43.923

7 What event would kill most of the worlds population at the SURFACE, but spare everyone at the altitude of a commercial jetliner? 2017-01-16T21:07:03.070

7 How many years should survivors wait before exiting a nuclear bomb shelter? 2018-08-10T07:31:38.447

7 The Worldkillers - Method I: Oceans 2019-02-15T12:54:33.410

7 Why would non-kinetic weapons be used for orbital bombardment? 2019-07-09T16:09:49.480

7 How to make nukes useless? 2019-09-13T20:49:53.123

6 The power of the Jupiter projectile 2015-03-09T04:16:52.677

6 How could a civilization with approx. 18th-century technology weaponise mined nuclear materials? 2015-04-10T15:14:35.557

6 How much energy to destroy the crust of a planet? 2016-04-16T17:44:45.647

6 Effects of a Moon-sized Sun-Cannon on Earth 2016-08-12T17:18:20.703

6 How a nuclear war in north hemisphere would affect the south hemisphere? 2016-10-03T18:05:40.417

6 Could we build and deploy a multi-gigaton nuclear bomb with today's technology? 2016-11-06T20:54:28.980

6 Super-sized parabolic mirror in space: Building the Nazi Sun Gun 2016-12-01T12:55:04.207

6 Can a brainwashed American president end the human race? 2017-03-04T12:25:12.517

6 Plausible way to send a moon crashing into the planet it's orbiting? 2017-05-31T19:04:54.433

6 How to destroy a star system? 2018-01-10T22:31:27.670

6 Weaponising the Tesla earthquake machine or modern equivalent 2019-01-25T15:43:52.857

6 Kinetic weapons - establishing an upper limit when dealing with grey goo 2019-07-18T14:43:47.583

6 Is it possible to build a black hole (kugelblitz) gun? 2019-10-24T19:26:44.160

6 How to reduce the lethality of Strangelets? 2019-12-18T22:34:42.863

6 Feasibility of Relativistic Artillery / Kill Vehicles 2020-01-17T13:22:27.870

5 How would wars be fought if everyone had a nuclear hand grenade? 2015-08-05T18:47:54.803

5 How many years it is going to take to retain technology if Aliens attacked earth and destroyed every machine on earth? 2015-08-14T10:13:16.510

5 What would be the consequences of detonating all nuclear weapons on the edge of space? 2015-08-14T18:17:14.363

5 Civilization self destruction prevention 2015-09-18T19:50:10.450

5 How can I make an anti-matter "rod" warhead for interplanetary delivery? 2016-08-16T01:34:06.860

5 Could a wizard create a nuclear explosion without building a bomb? 2017-01-10T00:04:00.240

5 Antimatter Explosion Signature 2017-03-23T02:39:43.640

5 Anti Personel Radiation Incendary Long Fallout Orbital Onset Laser Sattelite 2018-04-01T08:59:45.880

5 Feasibility of Larry Niven's Wunderland Treatymaker 2019-11-22T23:24:57.993

4 Dyson Laser feasibility 2015-01-11T05:38:12.890

4 Planet-enshrouding weapons grid 2015-02-18T23:54:09.240

4 What will be the roles and strategies of big countries in the conflict between India and Pakistan? 2015-03-27T08:35:29.183

4 How would Death Star move between systems? 2015-07-02T04:49:20.797

4 Optimal way of galaxy destruction ? 2015-12-17T22:57:47.527

4 A weapon to attack the Solar System 2016-02-26T18:38:08.970

4 How would a self-propagating explosion like in the 1994 Independence day work? 2016-07-20T14:16:38.840

4 An Oil Pipeline--A Target for the Livens Flamethrower 2016-08-06T19:23:01.837

4 How fast is the shockwave of a nuclear bomb from 2-5m away? 2016-09-09T01:01:01.227

4 What's a safer design for a relativistic kill vehicle? 2016-10-20T04:28:27.367

4 How many people would survive the nuclear winter after a full-scale nuclear war, and where? 2016-12-16T01:02:57.697

4 A weapon to rapidly change the Earth's atmosphere 2019-06-20T05:47:46.723

4 We need help with our xenoforming weapon of mass destruction 2019-08-19T08:29:27.530

4 Feasibility of The Absorbic Bomb from The Killing Star 2019-11-22T12:03:53.393

3 What's the effect of a standard bullet hitting Earth at 0.99 c? 2015-09-17T14:39:48.900

3 How to destroy/decimate life on earth with chemicals? 2015-11-20T20:16:02.733

3 A nuclear weapon to destroy the earth - in public domain! 2016-05-05T13:40:35.213

3 Utilize virus & bacteria to perform fast kills 2016-07-07T09:56:34.043

3 How would a pure fusion bomb change modern warfare 2016-11-29T05:51:21.790

3 What are short-term defenses against massive elegtromagnetic disruption? 2017-03-18T13:21:41.430

3 Deep space covert operations - covering up a covert operation 2017-07-04T08:00:35.933