There should no longer be any doubt about whether humans will one day be genetically modified. A new tool – called CRISPR – is already being used to edit the genomes of insects and animals. Essentially a very sharp molecular knife, CRISPR allows scientists to carve out and insert genes precisely and inexpensively. It is only a matter of time before it will be used to engineer our descendants – eliminating many dangerous hereditary diseases in the process.
To be sure, this eventuality is being hotly debated. The main arguments against genetic modification of human embryos are that it would be unsafe and unfair, and that modification would quickly go beyond efforts to reduce the incidence of inherited maladies. But, ultimately, none of these reasons is likely to be persuasive enough to stop the technology from being widely used. […]
Read the full article here.