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Supposing a roughly mars sized planet, how little surface water would need to exist to sustain a population of a size similar to pre-industrial earth (say 750 million?) The situation is somewhat u...
How could a creature explode itself? Why would it? We see example ideas of these all the time (Scourges, creepers, etc.) but nobody ever said how or why a creature would intentionally explode. I...
I'm playing with the idea of an alien race that uses ammonia, not water, as a solvent and breathes hydrogen. This is mainly because I want it to combust when exposed to our atmosphere. However, I w...
Storms can devastate lives and property, but they have benefits as well--plenty of water for the plants and nitrogen for the soil. Even drought has its benefits, giving the landscape an occasional...
I have a universe where humanity has produced various civilizations on multiple planets (and no planet has achieved a single world government); and very few of these countries possess the know-how ...
I'm working on a deconstruction of a high fantasy setting. The plot starts with a female protagonist being forcibly summoned into said setting with few to none of her memories. The world is popul...
I'm talking about ionized gas not the plasma in our blood. I have been reading science articles about plasma and they keep hinting at the idea of plasma based life. Here is my first example and an...
Suppose you became immortal* or came by the ability to live for thousands of years due to some inexplicable/irrelevant event (you still appear to be human by all standards except aging). What would...
I'd like to create a temple haunted by beings who are ostensibly ancestral spirits - basically, ghosts. How could ghosts be explained without an afterlife? gives me some intriguing ideas, but I'd l...
I know that in our universe, electromagnetism and gravity decrease with the inverse of the distance squared. Would it be possible though for there to be a force in another universe with three spati...
Long story short I need a unique ring system around a Jovian planet and thus I think of möbius strip. Can a gas giant have a ring system shaped like möbius strip exist naturally? Why do I post ...
The world of Baros (b'a:rəs) has low gravity (around 0.5g), thick, moist atmosphere (2-3 bar), and lots of volcanoes. Humans mostly inhabit sunny elevated areas, separated by relatively dark and C...
We all know the average human eye is restricted to perceiving color in the visible spectrum (or subsets thereof). Beyond the borders of that spectrum, we have infrared and ultraviolet. I understand...
I'm building a world that I would like to be quite realistic. One of the plot lines I've considered is plate tectonics that move at a rate of anywhere from 0.8 to 2.0 kilometers per year. This is i...
If I'm writing a sci-fi story and I wanted to include humans with modified eyesight that see into the ultraviolet and infrared bands of the electromagnetic spectrum, what would I have to change abo...
Imagine for a few moments that despite the difficulty a race has evolved in space, away from any atmosphere (perhaps a species of space jellyfish). This race exists in a fairly 'noisy' nebula, but...
Our war with the plants has been unending for thousands of years. And we don't even know it exists. Plants strategize, doing their best to survive, but the humans are relentless. Constant removal ...
I would like some rare humans (1 in 10 million) to have a mutation that increases their lifetime by a factor of three. In other words, these rare humans could live for ~240 years on average. But I...
Where would you put the saddle? On the neck or on the hip? Thanks for the answers and comments.
Would humans have to become "wild" for this to happen?
I've a creature that can focus CO2 laser through the len of the unique eyeball as means of self defense mechanism via natural selection. Now using the same natural selection process how can such cr...
Bangladesh, like a lot of other third world countries require an awful lot of work to become, 'first-world' ready, thoughts we take for granted are condemned in such societies, but if they were to ...
What would be the possible and definite effects of two galaxies colliding with each other? (Milky Way & Andromeda) Long-term and short-term effects are both important. I'd like to know becaus...
The game Rodina features four planets, all with different colored skies. For some reason, the sun is a different color from each planet's surface (use this guide for reference). The four planets, ...
We can rebuild him. We have the budget... but do we have the technology? In the process of reviewing the proposed enhancements for the Six Billion Dollar Man, such as improved oxygen use, the fol...
