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There are a number of stories about persons with exact look alikes. In general this seems to be a rather rare phenomenon. But if you assume more and more humans it should become also more likely ...
In his Robot Series, Isaac Asimov mentions "yeast substitutes" as a way of creating enough food to feed everybody in the Cities. It's also mentioned in Prelude to Foundation. Here's a few quotes fr...
Scenario: I have a generation ship moving between two star systems. Given that such a ship needs to have a completely self sufficient life cycle system to make it viable, ejecting mass continuously...
Simplifying a larger problem. Building a sci-fi text game and I don't want the science to be too wrong. Imagine I have two points in space which are 111,125 kilometers apart and it takes 17 minut...
This is a rather nasty, if rare, brain-eating thermophilic amoeba which lives in warm waters in North America (and elsewhere?). It kills by infecting the brain via the olfactory nerve after it ente...
This is the Bering Sea today... ...and this was the Bering Sea as recently as 25,000 years ago. Truth of the matter is, the Bering had been shifting back and forth from land to sea for 100 mi...
I was wondering if it is possible for life to evolve in a world which lacks any transition metals. I am wondering this because, it could give a plausible explanation for a world which is very unli...
Our intrepid interstellar crew arrive in a new solar system. The find a planet in the Goldilocks zone. However the planet has no life, but is otherwise earth like*. The atmosphere is 80% nitrogen, ...
Anyone who has a well-versed background in geology will know that the rock of the continents is granite. It forms as lava cools down very slowly, creating large minerals and crystals that shield...
Recently, there have been some great questions pertaining to monomolecular blades and filaments, so I wanted to ask two very essential questions. If we can't definitively answer these, we can never...
Guests of this large space station enjoy Earth-like gravity (80-90% minimum). How? Well the space station is so massive it has its own gravity. The disk shaped "core" is made with ultradense mater...
If so, what's the equation (or series of equations) for this, and what variables do I need to take into account? EDIT: the planet in my setting is rather "chilly" (around 9.35 Celsius average) wit...
Lets say you have an average-ish magnetar "” about 3 solar masses, with a magnetic field of 108 teslas (it's decayed a bit since it was born). Now lets say we have a solar system with a small-ish ...
In a world similar to ours, a mad scientist is bent on preventing the ascendance of one certain individual over the rest of the people inhabiting the northern part of the continental America, also ...
Suppose a starship is being powered by a lasers beamed first from the departure star, and then from the destination which is a moving base. The ship is moving in the regime of 10"“30% of light spee...
While the vampire is a monster of folklore, modern technothrillers (e.g. Federal Vampire and Zombie Agency, Ultraviolet, Blade, Underworld, Daybreakers) have portrayed vampires as humans infected b...
Variations of this question have been asked and answered previously but I am looking for something specific. Situation: Earth's body (mantel and crust) rotate at different rates than it's core (I ...
Let's say that an advanced civilisation once existed on Mars millions of years ago at a time when water existed in liquid form and that life was abundant on the planet. (Say this civilisation is a ...
This is a multi-species animal army with predators of all shapes and sixes, foxes, lions, bears, tigers, leopards, wolves, lynx, eagles, falcons and so on. The herbivores have been excluded from t...
