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In my question: Sustainability of Regular Global Wildfires Due to Oxygen Rich Atmosphere An answer was proposed for a kind of "Boom Bust Cycle". The atmosphere has little CO2 but a lot of O2. W...
I was wondering, for a speculative evolution project, what could be the bare minimum amount of organisms the common housefly needs to survive? Could they just feed on grass? Or should I add a flowe...
Shamelessly inspired by this question, where a race was capable of counting only 0, 1 and "˜many', I have designed a yet more extreme race!! The Continuuoids are a pretty complex race. They can so...
In a distant galaxy, there is a young, yellow-white star. Orbiting this star is a gas giant comprised almost entirely of oxygen-nitrogen, and water. In its core, there is a relatively large nickel-...
Given that you can travel back in time and have a baby there, or alternatively, send your baby back in time, would it be possible that this baby one day becomes your own mother (gives birth to you)...
So in my setting there is a small and exclusive group of people that have access to devices that work like computers (but which are not the same as computers. They do not use semiconductors and ele...
The universe is dying because it has exhausted nearly all of its resources. Humans became the last species in the universe because of their resilience and sheer willpower. And yet, humanity still...
Eusociality, is the most sophisticated level of organization of sociality, is defined by the following characteristics: cooperative brood care, overlapping generations within a colony of adults, a...
so i want to know What organs or modifications are need for a biological creature to develop lethal force as a pooping machine gun. something like how skunk spray their stinky odor as defense mec...
I am doing some hard sci-fi worldbuilding and really want to get as much correct as I can, but the effects of high sub-light speed travel on the travellers is doing my head in. I've pored literally...
I'm curious what factors a terrestrial planet impacting the Earth would require for the impact to cause negligible damage to the larger planet, while destroying the Earth.
Imagine a spaceship entering Earth's atmosphere, it has lost control of its engines and is relying on its reverse thrusters to decelerate before crashing into the Pacific ocean. So in an attempt ...
What modification would a plant "” especially tree "” develop in a world where everything is made of sugar, caramel, cake, syrup, soda, etc.? Think of something like Willy Wonka's Chocolate Factor...
Back home, five million years ago, the warm, wet climate of the Miocene sloped downwards into the cooler, drier Pliocene before descending even further into the more so Pleistocene. The slope was ...
The creature was originally a human, altered by an external agent that basically remade its body (carbon based). The creature is roughly 2 meters and relatively light. It is humanoid and boneless, ...
I've been told that having a thicker atmosphere would make it easier to fly, particularly of heavier-than-air designs, so I'm interested in giving my planet such conditions. I'm mainly interested t...
A magical calamity has wiped out an area about twice as big as Germany. The calamity also altered the climate in the region from one supporting forests and grasslands to a desert similar to the Am...
My creature, called the Kurbish, inhabits a wasteland-world, in my universe. Recently, I have been wondering; "How plausible is this thing, really?" A description: Large, Elephant-like creatures ...
So in my world there's a creature as big as a common rodent or as big as a rabbit in size. They live in packs, usually burrowed, but occasionally come to surface to get food. The alpha male is task...
Though this applies to lizardfolk and most creatures with a snout as well, I'm having trouble giving more facial expressions to dragons. Sure, they can wink, bare their fangs and laugh out loud and...
Please note: I am asking about planet orbiting a star, not a moon orbiting a planet. So I've been trying to get this planet down for a long while now but there are still so many pieces of the puzz...
Scenario: Humans need to create a pull factor for people to move to and establish cities and economies in less comfortable and densely inhabited places, because they're a bit full already. The huma...
I have a solar system containing multiple planets, most having an intelligent species inhabiting it. To keep a common peace, they created a large government system to help stop territorial wars bet...
You are 70 years old but you look 50, this because you have always maintained good health, mentally and physically. After experimenting with various clones before, you decide it's time for you to ...
Ecosystems like the african savanna have lots of megafauna which to some extent compete with each other for the same prey/vegetation, but still coexist just fine. So how do I construct similarly d...
