Currently, some philosophers and technicians propose to change the fundamental constitution of Homo sapiens, as by significantly altering the genome, implanting microchips in the brain, and pursuing related techniques. Among these proposals are aspirations to guide humanity’s evolution into new species. Some philosophers have countered that such species alteration is unethical and have proposed international policies to protect species integrity; yet, it remains unclear on what basis such right to species integrity would rest. An answer may come from an unexpected (...) angle of rights issues: Some cultures have indicated that they want no part of our technological culture, preferring to retain their practices. Yet, rights documents do not explicitly establish that any individual has a right to species integrity. Careful interpretation of rights documents nonetheless reveals that such a right to species integrity is implicit. Interpreting these so as to reveal this needed right is also necessary to retain the foundations of rights documents and institutions. Further, acknowledging a right of species integrity could mean, because of practicalities, a limit to the freedom of proponents to implement proposals to manipulate the species. (shrink)