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1500 questions
47
votes
18 answers
Why do dragons need to roar before chasing down their prey?
The dragons are the size of a double-decker bus with a long wingspan of over 100 meters, despite their muscular build they lack both endurance and stamina so more often than not they would simply ambush their prey. Thanks to the overgrowth of moss…
user6760
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3 answers
How much damage to the US would a Yellowstone eruption cause?
I posted this question: How would the United States survive and adapt in the decades following a Yellowstone eruption? What things would need to change as the world recovers? and it was closed due to it being too broad of a question, which was a…
WordyBirdy
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21 answers
How can a god convince a civilization that he doesn't exist?
On a planet similar to Earth, there is a society similar in technology to the society of ancient Greece. They believe in a single, all-powerful deity. This deity performs miracles on a regular basis. These are the common ones:
Intervening in…
HDE 226868
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47
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16 answers
What single element could destroy the world?
What single chemical element (get out your periodic tables) could most efficiently destroy all life on the planet.
Restrictions:
Natural elements only, and no anti-matter...nice try.
Looking for the element that a mad scientist would need the least…
James
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47
votes
17 answers
Parachute equivalent when there is no ground
In this world wandwavium machines fly around with glee.
But, between one flying island and another, there is no ground.
Beneath your flying machine the air only gets denser, and denser, until eventually there are only poisonous and caustic…
Surian
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15 answers
Would modern age military skills be useful during the crusades?
Modern era western company, with plenty of combat experience in Iraq & Afghanistan, is magically transported from East Syria into the newly founded kingdom of Jerusalem, right after the first crusade. Their clothes, weapons & equipment are replaced…
Rav
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47
votes
15 answers
What would be the consequence of a traffic light system where the users with green light pay the users with red light?
Traffic lights are mechanisms that control the usage of intersections. I'd like to perform a thought experiment for an alternative mechanism. The basic idea is that the intersection is a shared resource. Therefore, if some people are using it, they…
Lior
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votes
10 answers
Electricity free spaceship
Assume there's a spaceship in earth orbit that its crew of 24 want to get to Mars, the crew are all humans and possess all of modern day knowledge and equipment, is it possible for said ship to make the (one way journey) without any electricity…
cypher
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47
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11 answers
How do I keep my slimes from escaping their pens?
Hmm... Time to take inventory of the slimes real quick... Lamp Oil Slime, O- Slime, Yellow Paint Slime, Pur-... Red Paint Slime? Blue Paint Slime? You two didn't...! Great... So I need a new RPS and a new BPS. That's going to be annoying to make.…
Sora Tamashii
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47
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Let’s say a 1 ton (US) sphere of tungsten moving at 99.99% the speed of light hits earth, what happens? As specific as possible
What kind of destruction would it cause? I’m assuming it’d be rather significant, could it shatter a tectonic plate? The crust? How would the oceans fare? Would the planet be able to catch the projectile? Could any life survive the event?
And if…
Claiming Herald
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5 answers
Is it possible to create a Gas Mask using only Medieval Technology?
This question was inspired by this one, which brought up the concept that a lot of the issues with a sword that created toxic fumes would also kill the user (that question also has one of the best answers I've seen on the site, check it out if you…
Sydney Sleeper
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47
votes
11 answers
What would happen if the Earth struck a tiny but immovable object
We are living on this big lump of rock called the Earth, drifting ever so continuously through space.
Now imagine a tiny but immovable object in space, a single atom of 'unexplanium', locked in space-time (relative to our universe or whatever you…
Martijn
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votes
10 answers
How would Martian and Earth societies synchronize themselves regarding time?
If humans colonize Mars how will the 2 societies (Mars inhabitants and Earth inhabitants) be able to synchronize and cooperate regarding time? Since:
Martian days and years are different than the Earth's
Time passes faster on Mars since its mass…
papakias
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28 answers
How do I explain that an interstellar spaceship still requires risky spacewalks?
It is the mid 22nd century A.D. Twenty men and women signed on a ten year space exploration trip to the nearest star system. There are robots to do ship maintenance and a powerful A.I. to monitor the antimatter containment shield around the clock.…
user6760
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46
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11 answers
Is it possible for two symbiotic lifeforms to be born from the same egg?
Firstly, I'm not looking for an organism that gives birth to two separate species (like a human that gave birth to a human baby and a puppy) as I'm fairly sure that is impossible (though feel free to correct me if there is any example of that).
What…
adaliabooks
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