We are rapidly approaching the point where we can revive certain once thought-extinct animals, and even extinct human species such as the Neanderthals. Or, create creatures very similar. The ethical consequences of this have not yet been properly considered. Bringing back to life a species that has become extinct due to human intervention, few people will have any difficulty, at least if it is a species that is harmless to humans. But what about a natural extinct species, such as the basking shark?
Bringing to life a conscious species such as the Neanderthal is an even more ethical problem. Do we not condemn such an intelligent being to a life of solitude and desolation?