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Tachyons are detectable. Fortunately, I believe your question is based on a mistaken premise. Tachyons, if they exist, would likely indeed be detectable. In fact, since they were initially theoriz...
With substantial training and practice, a tongueless person can learn to speak again. Intelligibly. Your characters may choose not to do that though. Also, I frame challenge your assertion that ...
Possibilities: There are many possible developments in tech which would allow this, (OK , first, going along with the question's assertion that the freezing process has already occurred - thus exc...
No, wind patterns are not always going to be the same. Venus is a key counterexample here. Its Hadley cells extend to 60 degrees above and below the equator - double the size of Earth's Hadley cel...
No. Not even in the form of dimethylmercury. This extremely nasty organic compound was being carefully used by professional toxic metal researcher Karen Wetterhahn when a few small drops of it t...
The dragons are ruminants with multi-part stomachs. They eat organic material, and in their first stomach burn the material at 800C until it become graphene oxide. In the second stomach the graphe...
Miniature horses for all the things humans would use horses for, only they're small enough to ride and handle. Dogs can ride miniature horses (and your cats are larger than modern cats). (ref) M...
According to studies on everyone's favorite test subject"”college students"”the answer is: no more than 7 days. Studies on human subjects are rare "” in part because most modern universities ...
Ballet slippers. That 10mm layer of teflon has similar thickness and properties to Marley, a vinyl floor covering used in nearly all serious ballet studios and performance spaces. Also good for o...
A combination of signed language and vocalizations is your best bet. Because both hearing and sight can be compromised under water, a redundant system allows for maximum communication in a variety...
St. Anthony's Fire A fungus also known as ergot, found on rye grains and in rye bread containing a natural LSD substance. The convulsive symptoms from ergot-tainted rye may have been the sou...
Hand out prizes at the annual town fair. This is, in fact, how craftspeople and inventors rolled out new things. Most medium to large towns in Medieval Europe, for example, had 1 or 2 fairs a yea...
The strength of the race is shared amongst all Eldar, such that when one Eldar dies, their strength is bequeathed to all of the fair-folk, ther lifespan and any magical or fay abilities (eg. glamou...
The situation you're considering involves a rotating black hole characterized by the parameters $M$ and $J$, the mass and angular momentum of the black hole. The two are encapsulated in something c...
How could indestructible materials be used in power generation? Energy storage. If you can spin a flywheel to relativistic speeds on indestructible bearings using electromagnets (in vacuum), ...
Alexander's answer is completely correct; there is no way to split one black hole into smaller ones. I think, though, that it might be worth explaining why this is the case, particularly because th...
Humans already are able to have ears halfway there. In most people, protruding or prominent ears are caused by an underdeveloped antihelical fold. When the antihelical fold does not form ...
It is very possible to sustain a human being (even a physically active one) without them having to eat at all. Gastrostomy tubes go from outside of the body directly into the stomach. But what ...
Stem cells Stem cells have the remarkable potential to develop into many different cell types in the body during early life and growth. In addition, in many tissues they serve as a sort of ...
Intestinal worms Intestinal worms are properly called "helminths," which most dictionaries will tell you are parasites. Exploiting their hosts, draining resources, sucking the life out of t...
Good points all and valid. Civilisations of the past have failed when they outgrew their local resources, usually wood in the limit as it is impractical to transport over large distances. However...
Reproduction We're on Earth, in an area whose weather is cold and dry most of the year, with a short summer and long winter (and brief transitional periods). We have a mammal, around the size of ...
Elemental Mercury Okay, this doesn't really meet your requirements. Not much is absorbed through the skin. But mercury in your hand is fun to play with and your victim might keep it on longer th...
The answer to your question depends strongly on the supernova rate in the galaxy. The Milky Way currently is not an active galaxy - the supermassive black hole at its center is relatively quiescent...
(Do you need it to be strictly an absolute operational altitude?) The easiest approach (no pun intended) might be to go with something similar to what airliners on Earth do. While for the passenge...
