Part 5/9:
In 2015, Chinese researchers first demonstrated the application of CRISPR-Cas9 on dead human embryos, igniting a wave of interest. A notable moment occurred in 2018, when researcher He Jiankui announced that he had modified embryos to reduce susceptibility to HIV. Although his methods resulted in unexpected gene variations, they illustrated the profound impact of gene editing on both human health and destiny—albeit with controversial and unforeseen outcomes.