60 How would humanity enter a Dark Age? 2015-01-27T04:52:56.573

30 How old do surviving children need to be to keep human civilization from failing? 2018-08-30T23:18:24.470

28 A Treasure Chest for your Post-apocalyptic Children 2016-01-18T03:51:19.260

27 How would a primitive society react to a cataclysmic event that disproves their beliefs? 2017-01-26T08:13:04.900

19 What cataclysm could make an entire interstellar species extinct? 2015-02-06T23:13:56.437

16 How to cause an exodus from the west coast of the United States inland? 2016-04-13T12:57:05.833

15 What apocalyptic event would leave a small percentage of humanity alive, but set it back a few hundred years? 2017-10-26T06:56:44.937

13 What kind of event could stop electricity? 2015-03-02T14:11:47.050

9 How long would it take a region to geologically settle down after a major cataclysm? 2016-05-24T20:16:02.233

9 What amount of forrest-fire in square km or metric tons, would be necesary to bring oxygen levels below 19.5% that humans require to stay alive? 2018-11-14T06:45:52.923

9 Could we build a massive “Ark” type space station with current technology? 2019-05-15T04:33:37.063

8 How much destruction could be wrought with the chemical and atomic energies in 30,000 humanoid bodies? 2015-10-20T20:26:02.113

7 Entirely too much mana from the heavens 2016-05-04T07:07:47.210

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 Humanity surviving on a sunless planet 2018-05-01T09:58:10.600

7 How does an alien race from a dying world annihilate most of humanity to colonize the planet for themselves? 2019-10-08T18:18:24.243

6 Effects of a close approach with a non-pulsar neutron star? 2019-03-12T08:43:09.137

5 How long would it take to choke the world in CO2, if sunlight were blocked? 2015-06-29T02:42:06.533

5 Effect of red giant phase on the Solar System 2016-01-13T08:39:12.320

5 What is the largest dragon that could take off without destroying the planet? 2019-07-19T10:37:38.227

5 Jupiter Leaks Into Earth 2019-12-25T22:53:46.380

4 How would people left on a planet that will be destroyed react? 2016-02-01T01:56:21.393

4 How long would it take for society to readjust after half of human population suddenly ceases to exist? 2018-04-27T10:15:46.807

4 What would happen if a little less than half of the moon crashed into the Atlantic ocean? 2018-09-23T19:01:37.147

4 Cataclysmic cloud of asteroid bits 2018-10-04T14:29:56.150

4 What would happen if the ISS made an uncontrolled re-entry through Earth's atmosphere? 2019-10-21T00:24:53.683

3 How would society react to the impending destruction of its planet? 2016-01-31T04:37:41.177

3 After the rocks fall 2017-04-24T21:20:08.957

3 Could a ~150 mile impact basin form from a small object imact? 2019-01-07T03:15:51.557

3 What kind of extinction event could solve Global Warming? 2019-03-10T05:45:22.167

2 What would happen if every human female turned into a cat? 2015-12-26T14:51:38.453

2 Equipped with the knowledge we have now, what could a group of people do NOW to survive future climate-change-induced collapse of society? 2016-10-31T10:18:01.997

2 Large country-sized landmass transmutation 2017-01-18T22:24:56.917

2 Conditions to make giant storm 2017-06-02T12:00:24.000

2 Intelligent life wiped out in a binary system with a neutron star? 2019-07-09T02:35:24.443

2 What would be the most effective way for a parasitic alien lifeform to spread and grow on a post-apocalyptic Earth? 2019-10-09T18:19:46.097

1 The Bubble Kingdom 2015-05-08T04:30:28.580

1 Could ancient Atlantean monuments have survived a flood cataclysm? 2015-08-18T00:54:25.407

1 Destruction of space colonist's technology 2018-08-24T20:34:17.537

0 How to wipe out humanity within a week? 2015-07-17T21:52:48.827

0 Size of asteroid/comet compared to effect on impact 2016-07-29T02:49:56.383

0 Every murderer and rapist in the world vanished without a trace. How many people is that? 2018-08-23T13:42:53.540

-1 What cataclysmic event would potentially block (or make it very difficult) access from one half of the continent to the other? 2017-05-15T04:24:08.370

-1 If 35% of the world's population died overnight, how far back would society be set? 2017-11-14T22:37:56.733

-3 Oceanic Hostage Negotiation 2017-06-08T13:23:13.980

-4 All male politicians dead 2018-02-16T05:03:16.027