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A braindead person will often die a true death in short time. Braindead people usually die within hours to days, and even to be kept "alive" they need mechanical ventilation, because a dead brain will …

In the real world, there are some wasps (Cotesia glomerata) that lay their eggs inside the caterpillars of some specific butterfly species (those of genus Pieris). The caterpillars initially want noth …

Brain implant The regenerating human has a brain implant that interfaces with the brain, and is capable of reading the brain's current state at any moment. It also has access to wireless networks and …

No need for eyelids. Many cartoons and drawings emulate the body language of eyelids by changing the shape of the eye itself. I can't draw because I am typing on a phone, but here is a super exxagerat …

In general you cannot get a blood donation from another species. It is already [expletive] complicated between members of the same species. Sure, medical tech made it so that giving or receiving blood …

For a given value of reproduce... Some fantasy games like Warcraft have "races" that are actually factions. And some fantasy RPG's define vampires and zombies as races rather than humanoids with a con …

For that you need the common ancestor of all extant plants to have evolved with the need to glow in the dark. Perhaps it coevolved with a pollinator that only comes out at night, and which is attracte …

You can buy these things from Amazon. They are usually meant for pets. I find this to be a kind of animal cruelty, but if you apply it to a human, it might be something more humane than prison. With p …

I try my best not to be ageist, but the essence of the question leads me to believe we are from different generations. Anyone who had their infancy between the late 1970's to early 90's should immedia …

Some users have already pointed out that some drugs will do it. Dragongeek mentioned date rape drugs, those are the most classic examples. I'll add something else: sleep deprivation. From Harvard Heal …

Already been done Dr. Miguel Nicholelis had made a Rhesus monkey control a robotic arm in 2003. In 2014 he had a paralyzed person controlling an exoskeleton: He is currently working on a project that …

Totally plausible The one obstacle for a successful photosynthetising animal is that in most cases, photosynthesis would not provide even an insignificant amount of the calories an animal needs. Manda …

My question is this: Firstly, even on our planet, florescent materials "pop" at dusk or on cloudy days. I'm assuming that around an F-type star with much more UV radiation, the effect would be more d …

You don't need any scientific justification for a good story. The Little Prince lived on an asteroid that would either be unable to hold an atmosphere, or would have such intense gravity gradients tha …

Don't send humans to interact with aliens until both humans and the relevant species have both made sure their germs won't harm each other. This might involve lab conditions, volunteers and years of r …