29 How to explain human life expectancy increase? 2017-10-18T13:23:16.250

26 How to kill trees? 2018-06-04T13:11:16.563

24 How would fantasy dwarves exist, realistically? 2019-05-16T10:41:19.223

17 Would carbon-based lifeforms be able to eat silicon-based lifeforms? 2019-01-05T16:35:05.263

15 Would you shoot out DNA onto baby planets if you planned to visit it someday? 2016-09-14T08:00:40.700

15 Habitable Planet with Highly Eliptical Orbit 2020-01-05T04:17:41.950

14 If only the sun's light went out, how long would it take for all living things to die out? 2017-12-15T01:31:40.643

12 Can there be life on a planet with water, but without atmosphere? 2016-08-25T20:21:34.200

12 Could a decreased heartrate thanks to better hemoglobin lead to an increased lifespan? 2017-12-08T19:59:57.463

11 Smallest possible habitable planet? (also taking density into account) 2016-07-15T15:32:10.540

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

10 Algae using UV light from auroras for photosynthesis 2019-08-20T19:38:49.107

9 What Earth animals would be the most logical candidate for uplifting in a science fiction world? 2017-06-07T20:31:06.097

9 Space Whales, how to survive? 2017-07-30T01:32:00.340

9 Is it possible to have an underground swamp inside a cave? 2017-08-10T21:23:47.047

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 Appropriate liquid/solvent for life in my underground environment on Venus 2019-05-16T14:08:11.933

9 Could life generate twice on a planet using slightly different materials? 2020-01-29T03:16:52.753

8 Finding Signs of Life from afar 2016-10-18T17:28:58.273

8 How could a creature get off a planet without technology? 2017-03-21T19:56:04.027

8 Could bacteria survive on a star? 2019-12-31T13:13:46.573

7 At what stage would we have detected sentient/intelligent life on the moon? 2017-01-16T19:48:58.597

7 How long would it take until we realise that suddenly nobody can conceive a child regularly? 2018-04-13T21:35:16.597

7 Life on a gas giant? 2019-01-24T03:50:31.780

7 Adapting to a sonic world 2019-09-18T15:29:04.963

7 If humans evolved on Mars instead of Earth, how quickly would we have detected life on Earth? 2019-10-23T14:04:41.170

6 Phonosynthesis - ecosystem where "plants" extract energy from sound, not light 2017-05-29T22:45:48.627

6 Space Whales, how to move? 2017-07-30T01:28:19.960

6 Planet Orbiting a Red Dwarf 2018-12-27T23:55:29.637

6 How could a foam habitat support animal life? 2019-06-06T14:41:26.433

6 Planetary neighbors 2019-08-20T05:49:01.120

6 Environment/Ecosystem for a "Sunfall" colony 2019-10-29T13:25:03.663

6 Hanging World - Trees 2019-11-05T14:12:36.493

5 Subsurface alien life on Titan moon 2016-11-28T06:35:31.230

5 How can a flat sheet of cells develop complexity and even intelligence? 2017-01-27T00:14:03.827

5 Energy wiping out beings while preserving planet 2017-02-10T22:24:16.260

5 Are single-biomed planets (like in *Star Wars*) possible? 2017-12-20T03:16:23.157

5 Could life develop above a planet's atmosphere? 2018-04-30T16:28:45.570

5 Iron based life 2019-01-14T05:09:18.620

5 How would a world evolve with regular blizzards? 2019-02-05T14:25:19.223

5 Plausibility of Hexapodal Aerial Megafauna 2019-11-25T19:09:26.223

5 Living machines. At which point can machines be considered a life form or organic? 2019-12-26T18:28:50.107

4 Could a hollow rocky planet the size of Jupiter be artificially created, and how would that affect species growing on its surface 2016-10-31T21:15:55.303

4 If we built a large moon close to Mars, could we make Mars a living world? 2016-11-29T14:25:55.687

4 Is a planet able to sustain life without a moon? 2018-01-20T17:11:41.377

4 How do you get a thick atmosphere with less than earth-like gravity? 2018-03-16T18:20:18.463

4 Planet Blob - variable gravity 2018-11-24T17:51:51.940

4 Could fruit (specifically oranges) evolve into intelligent life? 2019-02-16T22:55:12.003

4 Would life be possible on a planet that has an axis of rotation that always "pointed" directly at the sun? 2019-04-29T02:44:44.357

4 Born and raised on a world with longer days and years - would it impact life expectancy 2019-07-11T06:11:45.883

4 How much of our solar system can you change without breaking the science of life on earth? 2019-08-02T09:19:43.320

4 How Would Ammonia-Based Life Evolve? 2019-09-24T18:27:33.760

3 Re lifing the life 2017-03-22T16:55:42.973

3 Life on a water-ball planet 2018-01-06T22:52:47.223

3 Is there a way for the concept of life to be evil? 2018-06-27T18:11:56.270

3 Could this moon of a gas giant orbiting a neutron star support life? 2018-10-12T01:01:48.243

3 Can I make the carbon cycle shorter - by metamorphosis from plant to animal and vice-versa 2018-12-10T15:36:53.300

3 What items from the Roman-age tech-level could be used to deter all creatures from entering a small area? 2019-04-14T18:54:48.690

3 Realistic Necromancy? 2019-04-27T14:16:35.860

3 Planet with two independent forms of life? 2019-07-28T20:31:40.260

2 Lowered air pressure with higher oxygen content 2016-08-10T02:14:21.987

2 Is it possible for a sustained Jovian-based ecology to exist? 2017-01-15T18:49:10.297

2 Evolutionary differences betweeen space-dwelling and planet-dwelling humans? 2017-01-20T19:09:24.857

2 A world without surface tension 2017-04-01T18:20:08.583

2 How could a parasitic organism spread through humans? 2017-08-29T17:51:11.340

2 What is intelligent life? 2017-12-13T18:08:36.550

2 Is it possible for humanoid life to develop on a 1.4 G planet? 2018-07-29T22:47:08.260

2 What would happen if all (higher) life magically became sentient and reached human-level intelligence? 2018-08-26T15:43:09.543

2 If humans were biologically immortal, but had an average lifespan of 100 years, what would the distribution of ages be? 2018-11-13T01:18:19.140

2 How long a human being could live with stem cells? 2019-02-03T10:59:38.353

2 Life evolving on a artificial Floating Island on a ocean world 2019-03-09T21:20:08.147

2 Life on land, sea, and what else? 2019-06-03T16:02:20.417

2 How long until land life can return after the impact? 2019-11-15T02:57:33.800

2 Reason/Mechanism for seemingly randomly lengthened lifespans in characters in a roughly viking-age world 2019-12-02T06:08:24.607

2 In what way would a regenerating undead be "undead"? 2020-02-15T23:09:14.307

1 How to create artifical life forms? 2016-07-21T01:06:36.873

1 What are the most relevant degrees that can contribute to the field of human life extension? 2016-08-14T21:47:28.390

1 Could exoplanet with Earth's magnetic field orbiting a binary star system harbour intelligent life? 2016-09-09T12:58:29.570

1 Ecocide with a clear deliberate intent 2016-11-21T15:43:14.457

1 Would people hate characters that cheat? 2016-12-25T14:10:58.080

1 How would two moons work on a planet? 2017-05-29T22:57:24.213

1 Hypothetical Terrestrial Moon Atmospheric Composition Validation 2017-06-30T23:31:19.870

1 Surviving on a planet with an eccentric orbit 2017-09-24T09:52:50.620

1 Life On Sale......? 2017-09-27T05:06:38.793

1 Would it be possible to have three planets merge but still allow some life survive? 2017-12-19T19:28:20.377

1 How would life on a planet without seasons evolve? 2018-03-26T03:56:39.200

1 Can you create a small atmosphere with giant walls? 2018-04-04T14:54:52.967

1 What would happen to us if animals, excluding human being, were mute? 2018-09-12T04:54:44.920

1 How can one manipulate elementary particles to make a person live forever? 2019-03-23T21:18:05.837

1 I'm building a fantasy world with three large moons and orbiting a distant sun. I need help with the following: 2019-12-03T14:21:55.740

1 Lifespan of Plutonians 2020-02-21T05:11:34.030

0 Death as a parallel or serial process 2016-08-26T04:27:12.223

0 Earth-like moons orbiting around a gas giant 2016-10-24T01:56:36.103

0 How to bring undead back to real life? 2017-07-13T21:35:42.000

0 What happen if 95% of bees die? 2017-09-20T14:32:08.340

0 Trust and build an alliance with a high-developed and more powerful alien race 2017-10-14T08:24:07.990

0 Advice on establishing a magical ecosystem? 2017-11-25T07:37:25.273

0 How can death change the magic? 2018-05-07T21:59:05.117

0 Live Body Preservation.....A way to live for many centuries? 2018-07-11T11:14:50.250