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In my world, a population of about a billion people lives in an underground cave that has growing grass, a forest of trees, an immensely deep lake to allow for rain to flow through the water cycle,...
In any modern story nowadays, shapeshifters always have an original form; Andalites from Animorphs or Mystique from X-men to name a few. It raises the question of why something that can change form...
In our understanding of mass extinction and adaptive radiation, we have found that life can't and doesn't bounce back right away. They take time. It took life eight to ten million years to recove...
I'm retouching the idea discussed in detail here Evolution of species with seperate sapient and non-sapient forms?. I like the discussion had there, but want to focus in on one specific question, ...
There are lots of examples in fiction of lizard people, bird people or beast people, but I'd like to expand my phylogenetic horizons in conceptualizing my world. To that end, I have conceptualized ...
Xenomorphs are one of the most dangerous, deadly aliens in movie history. They breed in massive numbers, live in an ant-like society, and have blood that doubles as concentrated acid. Most of tho...
Say, if I detonate a ridiculously large nuke on this side of the Earth, is it possible that the shock wave travels through the center of the Earth and create an earthquake on the other side? If yes...
I got the idea from this answer, which suggests a species that evolved early in the existence if the universe and spreads between stars upon their death. If one of said creatures enters the inner ...
This answer states that "guided evolution" would help babies develop under constant 3-4g's. This answer has inspired me to ask , what sort of genetic tinkering would help humans adapt to life on a ...
I'm very interested in a post-eruption setting in the continental United States. Unfortunately, it looks quite unlikely that a serious caldera-forming eruption is in our near future. However, we'r...
Let's say you are creating secret instructions for a new, very dangerous weapon. You have decided to encrypt the instructions. But you do not want anyone to guess that these notes are encrypted! S...
Is it possible that a monkey-like creature, in the mountains, could evolve to have no legs and a really strong set of fore-arms? I was thinking that this might be possible because of the climbing s...
In one of the Worlds I am building, there are zombies. Sadly the zombie genre is dead(sorry), this is mainly due to the overwhelming domination in the genre and lack of new creative zombie types (w...
Continuing from this question: The rodents on the synthetic planet ( which I am now calling Ark ) can now walk/run erect when desired. The scientists continue with biological forging and work on t...
It's just another average day in the life of modern day earth. Suddenly a transmission from orbit washes over the planet! Oh no! An alien race, calling themselves the "Thull", has suddenly arrived ...
It is late in the day, and humanity has made the fateful step: digital transcendence for some. The last few weeks before the Singularity were singularly chaotic, with widespread violence by opponen...
I have a work-in-progress scenario where an interstellar generation/ark/cryogenic ship has reached its destination, but there are no habitable planets. There's no turning back, and so now the colon...
How would it be possible to have a planet with two defining surface features, ocean and mountains? Such a planet would have to be habitable for humans who arrive there, though it does not need to s...
For a highly intelligent avian dinosaur whose grasping and manipulating appendages have all but vanished, there are options : for the species to evolve beaks that are better fine manipulators, or c...
Far to the north, in a slushy and storm-torn wasteland, a city stands. Massive pillars jut hundreds of feet into the sky from their anchors deep beneath the rising and falling tides below the city....
Is there a way for a moon to usually appear relatively similar to our own moon, but occasionally appear much larger from the planet's surface without causing natural disasters due to extreme gravit...
NASA has received a new employee: a dragon! His name is Firewing and he's there to help NASA with its missions. He's not an astronaut himself, mainly because of the logistical issues of launching a...
We have successfully put 37 trillion nanobots the size of a red blood cell into the experimental group test subjects' willing participants' bloodstream, but without a power source, the nanobots clo...
On my fictitious planet, a 1/2 pound mammal had a brain to body mass ratio similar to that of a human , could they have human - level intelligence, or would the brain be too small the develop that ...
In Dune by Frank Herbert, there is a molecule called melange. Melange, also known as the spice, grants much longer lifespans to those who take it. How could a molecule grant greatly extended lifes...
