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Many animals also prefer to chase their food, but are not allowed to at zoos. And a troll that has to decide between starving and scavenging almost certainly would prefer the latter. Therefore a s...
Chemical castration Cyproterone acetate Cyproterone acetate is one choice for chemical castration. Hormonal Therapy for Male Sexual Dysfunction describes it as a "potent, dose-dependent antiandro...
Not very realistic. HowStuffWorks has an interesting article about generating electricity from lightning. There are several problems with harnessing natural lightning: The logistical problems ...
Well, some mosquitos when flying make a noise that is clearly audible by a human (as everyone who had one in the room at night knows from painful experience). So I assume that ship has the same abi...
As you point out, any large predator should be plenty able to kill a human, given a reason to do it. Hunting for food could certainly be one such reason. Tigers already kill humans directly, and a...
I agree with another answer that, if your cultural values permit it, giving over the dead to the trolls could work. That'd be a tough sell for early-middle-ages Europe, but then, caring about trol...
Not much. I assume that by "14% less gravity" you mean that at the surface, the force of gravity is only 0.86 times its strength on Earth's surface, i.e $g=0.86g_{\oplus}$. You also say that the s...
Yes, and it's being worked on right now. The Above Below project aims to take a disused mine in Arizona and convert it into a underground building. The terraces of the mine will be covered by a la...
First, as JDÅ‚ugosz pointed out, the orbit you've drawn has a very high eccentricity - much higher than any of the planets in the Solar System, or many other planetary systems. To have something th...
Whoever has this machines and the resources to operate it, basically has absolute power. It is the ultimate weapon (just delete your enemies). It will allow you to go to space easily. It will allow...
Use a solar sail. Advantages: Solar sails are lightweight(-ish) They can be used for propulsion According to Dandouros et al., solar sails built with technology in the near future could easily...
I would say it's a bit of independent space that's "glued" to ordinary space at the entry door. That also explains how time travelling works: That independent space is "unglued" from space, and the...
Your advanced civilization stored all knowledge in electronic systems. Moreover, all work was done by robots or androids. Therefore humans didn't have much practical knowledge (it wasn't needed bec...
Well, as scientists have found out, the universe is full of dark matter; indeed there's more than five times as much dark matter than ordinary matter. Now dark matter is called such because we cann...
It would take a lot of ruthlessness, and even then rumors would get out. Any members that get out of line are eliminated, anyone that asks the wrong questions has an accident. First, being a socio...
It all depends on how obliterated you want the Earth to be. If you want nothing left, you need to completely destroy Earth and accelerate all the remaining fragments so that they clear the area pr...
The second law of thermodynamics dictates that without a decent amount of energy, existing physical structures will decay because there are more ways of arranging an unordered structure than one ca...
We'd get on the phone to some of the people who did it the first time. No, seriously. We have a lot of experts in this field who are still alive, and they may well hold enough knowledge between th...
Fungus-like plants grow well without light; they just need something to feed on. So there are insects that feed on the fungus, and larger animals that feed on the insects. The fungus feeds on the d...
Do it digitally. A screen is still 2-dimensional, no? However, a screen allows you to add functions such as rotating the map - a tried-and-tested method of showing 3D. See Google Earth for an exam...
A 3D map showing the topography of the area was created by NASA and the British Antarctic Survey: This is what the continent would look like if you instantly removed all the ice and snow. A map ...
Instead of thinking about how the body changes, I propose you think about how the food might change. In your world, there could have been a cataclysmic event that removed digestive enzymes from ex...
Maps I made a partial example map for the birds of a land called Tjerokya. It uses (crude) arrows to show the path of currents traveling across the land and sea. Indicating changes in three dimens...
Most realistic way is centripetal force, which is the rotating wheel that you see on space stations and ships in movies. Linear acceleration also works, but requires you to maintain constant thrust...
You could be looking for a weather phenomena similar to June Gloom, which is a weather pattern that happens yearly around June in southern California, resulting in overcast skies and cooler tempera...
