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Since earthquakes, typhoons, tsunami and many natural disasters were measured or calculated to release more energy than many H-bombs can produce every seconds, can we one day harness this powerful ...
Would something like this be feasible? Span of bridge is approximately 5km. Height above canyon floor is approximately 800 meters (1/2 mile). Bridge structurally close to neutral. Tethered dirigi...
The Premise The Earth rotates on its own axis, which is tilted by about 23 degrees. The setting for my fantasy novel is an earth like planet without the axial tilt, all other factors remaining co...
Imagine that the oxygen disappears from earth's atmosphere for some 10 seconds completely. what would be the casualties it would cause, what would be the climatic changes and other changes it would...
My story involves everyone in the year 2015 suddenly disappearing. What would visitors to Earth find if they arrived in the year 12015, or 10,000 years after we all disappeared? Assume none of our ...
Ignoring the fact that we need water in order to survive, what would happen if all of the "oceans" on Earth were filled with a dense non-reactive gas (e.g. xenon or sulfur hexafluoride) instead of ...
Given the resources available on Earth, can we erect a colossal cage to envelope the entire planet? [Conditions] must covers the entire globe in a single non breaking element. brave any kinds of...
Is an alien lifeform covering itself comfortably in flames as a defense mechanism to wane off predators possible? I've heard of microbes surviving the extreme condition of outer space in complete v...
In a type III civilization probably even type II, would have developed solid energy construct resembles force shield which acts like a semi-permeable membrane to allow friend to pass but prohibit s...
Assumptions: We have materials that can withstand the temperatures/pressures/acidity of Venus. We can get to Venus and back reasonably easily (NASA does shuttles every 3 months). Here is Venus:...
A good friend of mine, who's a doctor, is very well traveled, and he told me he's seen skies of different worlds take all the colors of the rainbow (and the grayscale to boot). I suspect that he mi...
So, for reasons which may or may not pop up in a later question of mine, I need to light a small Moon-like moon on fire. Well, sort of. See, I need a small object capable of emitting a lot of ligh...
This question is closely related to, but more specific, than the question/comment that inspired it: Could a modern times time traveler produce an antibiotic in medieval times?. Imagine a person is...
Running a Steampunk campaign with some friends. The idea is that a massive a destructive plague wiped out the population of an island that was really technologically advanced. The plague needs to s...
Before the double helix DNA was discovered by Watson and his colleague, they theorized the existence of a triple-strands DNA and its properties. Is multiple-strands DNA possible perhaps by manipula...
Say you have a planet and the planet has a moon: could the moon have visible satellites as well? I don't mean a gas giant planet, I mean something habitable by humanoids or humans. Will the moon'...
Is it realistic for me to write about a time period where silicon-based sentience have evolved alongside humans? Perhaps they could have evolved to sentience when driven by nanobots (which could be...
I bring you all to the planet Krikkit, stuck in a star system enshrouded by a large dust cloud which prevents the Krikkiters from seeing the rest of the galaxy - and, by extension, the universe. Th...
Imagine a red dwarf star orbited by a considerably Earth-sized planet in the star's habitable zone. Assuming the planet has a sufficiently powerful magnetic field to protect its surface from the st...
The Settings: A pod of nanobots stranded on earth-like barren planet orbiting sun-like star. Assume no life form has formed on the planet, and nanobots popuate the planet. Could they evolve compl...
Can the gravitational pull of Earth drag the Moon into Earth's atmosphere? Likewise, can the gravitational pull of the Sun drag Earth into the Sun's atmosphere? If that can happen, what will happen...
So we harness energy from the sun using beams, right? Well what if we were to harness energy coming off the moon the same way? For those long winter months when the sun is rare we could use this to...
[Critter's descriptions] (D1) appearance closely resembles a cat (D2) no bigger than a dog (D3) toothless (D4) strange claws to climb any surfaces (D5) powerful hind legs can sprint like a cheeta...
On Earth, the polar bear is among the most sexually dimorphic animals, with males being on average almost twice as heavy as females (Wikipedia claims average weights of 450 kg for males versus 260 ...
After reading hours on here, I stumbled upon alot of answers that rely on some major changes in our understanding of space and time and its tech to allow us control antimatter or some future thrust...
