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What planetary parameters such as plate tectonics and volcanism etc would best encourage the most uneven planetary surface on an earth like planet? I want a world to be covered in very uneven terr...
Towards the end of this article (https://io9.gizmodo.com/what-would-the-earth-be-like-if-it-was-the-shape-of-a-d-1515700296) there is mention of the different kinds of orbits the moon of a Torus wo...
In the world I am building I wanted to design a race on a planet which get more full the more calories they eat and then stopping when they have had their daily caloric requirement. I have an idea'...
I live in Cape Town, South Africa where it is a very real possibility that not a single drop of water will be left in our dams come March 2018. THIS is a news article that suggests that at a gover...
My question is about unusual hereditary traits in humans. I'm new here and this is my first question - apologies in advance if I've accidentally messed this up or covered existing ground. I'm writ...
There are many stories of converting one element into another (such as the story of the Philosopher's Stone), but to actually mutate one material into another (at least with our our current underst...
Not long ago I asked about pH indicators and their use in making fantastical skin colors (pH Indicators and Fantastical Skin Colors) In that question, I listed bromothymol blue as a type of indica...
Whenever people discuss mammalian-type merfolk, I usually see them be modeled after cetaceans like dolphins and whales. This is perfectly serviceable, but there is one piece of anatomy that I canno...
My world - basically Earth all along, unless told otherwise - is populated by humans and few fantasy-based "races" (actually, species - any interbreed offspring, if possible, is infertile): elves, ...
What, if any, survival advantages could a testudine gain from evolving a bipedal stance, either permanently or temporarily? Essentially, is there a factor that would have to be introduced for this ...
I am revising my first draft and trying to add more evocative details. Here, I asked whether stars in a binary system are likely to fall on the ecliptic. As my hero hikes through the day and su...
How could blue soil exist, in a realistic earth-like world. The world may even be earth. First off is it even possible - could soil like this exist given the requirements below? (if not then why?)...
Sometimes old, discredited or impractical ideas come back to favor, because a new technology has evolved. Let us imagine a future Earth-like world (not early 20th century or steampunk) that would ...
"Glassing" a planet is a common ultimate tactic in Science Fiction, basically it consists in using high power energy weapons to destroy all life on the planet and reducing the soil and rock of the ...
I would like to genetically modify a human being in one concrete case like I did in other parts of my little series of How would it affect a human to suddenly... This time I would like to add a pre...
1 of my stories involves a pride. But not just any old lion pride. No, my story involves a pride with 3 different big cat species. I don't know if I should put character histories here or whether t...
A couple days ago, I posted this question about what it would feel like to walk on a Rocheworld. For some background, a Rocheworld is a double planet system where the two planets are so close toge...
It takes the Earth about 365.25 days to orbit the Sun on its current elliptical path. That means it moves about 30 km/s, 2×π×(149,600,000 km)/(1 year). So, given that, how high could Earth's...
When I was a kid, I conceptualized a post-apocalyptic story entirely starring Barbie dolls. One idea I had about how they would live and get around involved transmission towers, or power towers. Im...
I have a species with mostly avoidant and introverted personalities. They prefer to stay in small, nomadic groups and flee when the surrounding population becomes too large. The criterion for "too...
If a flourishing planet was cracked into several parts by some external force like a weapon of mass destruction, would it be possible to put it back together again? What possible ways can be used t...
I want to turn a planet fully covered in ocean into something Earth-like. The planet is completely submerged in water with no land above the sea level. The ocean itself is quite deep. The planet ...
It is still a myth as far as our modern civilization is concerned, Atlantis located somewhere within the devil's triangle and it's inhabitants had struck down many planes and vessels daring to dist...
Soft sci-fi uses inertial dampeners. Harder sci-fi uses stuff like advanced crash couches, robotic exoskeletons, or (my personal favorite) drug cocktails filled with stimulants and other medication...
Story starts out about 100 years from now. While in orbit around Earth preparing for an interstellar mission, our spacecraft encounters some hand-wavey spacetime anomaly such that we're still in o...
