Scientists in China have genetically modified human embryos, embarking on a slippery slope that could be capable of a calamitous ripple effect in human offspring. Scholarship aside, the ethics questions that sprout from genetically altering human embryos are innumerable. In a paper published by the journal Protein and Cell, a research team in GuangZhou, China, headed by Junjiu Huang, detailed their process and results of genetic editing. The gene in question is responsible for β-thalassaemia, which is a blood disorder that can be potentially fatal. Researchers used the CRISPR/Cas9 technique to edit the genes. As a matter of ethics, the researchers only used "non-viable" embryos that would be unable to make it to a live birth.